CN213692195U - Plastic-aluminum membrane, packaging structure and laminate polymer battery - Google Patents
Plastic-aluminum membrane, packaging structure and laminate polymer battery Download PDFInfo
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- CN213692195U CN213692195U CN202022088311.1U CN202022088311U CN213692195U CN 213692195 U CN213692195 U CN 213692195U CN 202022088311 U CN202022088311 U CN 202022088311U CN 213692195 U CN213692195 U CN 213692195U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides an aluminum-plastic film, packaging structure and laminate polymer battery, wherein the aluminum-plastic film includes that first dashes the hole, the second dashes the hole, first dashes that the hole is adjacent with the second dashes the hole and is provided with the partition between the two, the partition includes first vertical parting strip, second vertical parting strip and horizontal parting strip, wherein first dashes the hole and has first bottom surface, the second dashes the hole and has the second bottom surface, and two bottom surfaces are in the coplanar, the degree of depth that first dashes the hole is the same with the degree of depth that the second dashes the hole; the sum of the sizes of the height of the first vertical separating strips, the height of the second vertical separating strips and the length of the transverse separating strips is equal to twice of the depth of the first pit punching or the second pit punching; the first punching pit and the second punching pit provide accommodating cavities for the installation of subsequent electric cores, and the total length of the separating part is equal to the total height after the electric cores are folded in half, so that the side walls of the two folded shells are smooth and have no outward protrusion, and the abrasion and damage possibility of the aluminum plastic film in the assembling process or the using process are greatly reduced.
Description
Technical Field
The utility model relates to a laminate polymer battery technical field, concretely relates to plastic-aluminum membrane, packaging structure and laminate polymer battery.
Background
At present, in the manufacturing procedure of a soft package battery cell, the battery cell is generally placed in a pit of an aluminum-plastic film, and then the other half of the aluminum-plastic film is folded along the central line, so that the battery cell can be completely packaged. After the electric core is packaged, the top sealing edge of the aluminum plastic film for packaging the electric core is sealed, then the side sealing edge is sealed, electrolyte is injected after the side sealing edge is sealed, and then the pre-sealing edge of the electric core is sealed.
Generally, there are two main methods for molding and packaging aluminum plastic films: the first mode is conventional four-side strip seal, and the second mode is three-side strip seal, and the mode of three-side strip seal has increased the space utilization of a seal width for the mode of four-side strip seal, reduces the plastic-aluminum membrane quantity that a seal limit corresponds the width simultaneously, and then can reduce cost.
However, the traditional three-side seal also has defects, as shown in fig. 1, a separation structure 1-1 between two shells of an aluminum-plastic film stamping shell inevitably exists, a raised structure 1-2 as shown in fig. 2 is formed after the aluminum-plastic film stamping shell is folded in half, the raised structure 1-2 inevitably occupies a certain space, and the raised structure is easy to cause collision and abrasion in the assembly process, so that the aluminum-plastic film is damaged.
The chinese patent with the publication number of CN209561463U discloses an aluminum-plastic film, which includes a first punching pit and a second punching pit stamped and formed on the aluminum-plastic film, the aluminum-plastic film is integrated, the first punching pit and the second punching pit are adjacent to each other, and a separation portion is provided between the first punching pit and the second punching pit, the separation portion includes a first division bar, a second division bar, and an arc bar connecting the first division bar and the second division bar, wherein the first division bar and the second division bar are arranged in parallel, and the distance between the first division bar and the second division bar is 1-3 mm, the radian of the arc bar is pi, the pithead of the first punching pit and the second punching pit are located on the same horizontal plane, and the horizontal plane is tangent to the arc bar, but referring to fig. 4, 5, 7 and 8 thereof, it can be seen that such a protruding structure is still inevitably formed, and the assembling process or the using process still has the possibility of abrasion and damage; although the embodiment shown in fig. 5 is formed by punching a single-side aluminum-plastic film shell, the depth of the opposite folded edge is reduced, and the depths of the left shell and the right shell are different, so that the bottom surfaces of the two pit bodies have a height difference, but the shell openings are positioned on the same horizontal plane. Still have the shortcoming, if naked electric core utmost point ear layer is not middle in two top seal direction of height, have the risk that the pole piece was dragged to inside for a long time, and then cause misplacing between positive and negative pole piece, further have the safety risk.
The chinese patent with the publication number of CN209561464U discloses an aluminum-plastic film, which comprises a first punching pit and a second punching pit stamped and formed on the aluminum-plastic film, wherein the cell aluminum-plastic film is integrated, the first punching pit and the second punching pit of the cell are adjacent, and a separation part is arranged between the first punching pit and the second punching pit, wherein the first punching pit has a first bottom surface, the second punching pit has a second bottom surface, both the first bottom surface and the second bottom surface are inclined surfaces, the depths of the first punching pit and the second punching pit of the cell are gradually increased from the separation part to an opposite side wall, as can be seen from fig. 7 and 8, a protruding structure is still inevitably formed, and the aluminum-plastic film still has the possibility of abrasion and damage in the assembling process or the using process.
In summary, it is desirable to provide an aluminum plastic film to solve the problem of edge sealing and protrusion after folding two shells in a three-edge sealing manner.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an aluminum-plastic film, packaging structure and laminate polymer battery in the mode that adopts trilateral seal, can make two casing fifty percent discount back banding level and smooth no evagination, the aluminum-plastic film that significantly reduces is at assembling process or use wearing and tearing, damaged possibility.
In order to achieve the above object, the utility model provides an aluminum-plastic film, including stamping forming first dashing hole, the second dashes the hole on aluminum-plastic film, aluminum-plastic film formula as an organic whole, first dashing the hole and the second dashes the hole is adjacent and is provided with the partition portion between the two, the partition portion includes first vertical parting strip, second vertical parting strip and connects the horizontal parting strip of first vertical parting strip and second vertical parting strip, wherein first dashes the hole and has first bottom surface, and the second dashes the hole and has the second bottom surface, and first bottom surface and second bottom surface are in the coplanar, and the degree of depth of first dashing the hole is the same with the degree of depth of second dashing the hole; the sum of the sizes of the height of the first vertical separating strips, the height of the second vertical separating strips and the length of the transverse separating strips is equal to twice of the depth of the first pit punching or the second pit punching.
The first punching pit and the second punching pit are respectively punched on the integrated aluminum-plastic film, a containing cavity is provided for the installation of a follow-up electric core, the total length of a partition part arranged between the first punching pit and the second punching pit (the height of the first vertical partition strip, the height of the second vertical partition strip, the length of the transverse partition strip and the sum of the sizes of the first punching pit and the second punching pit) is equal to the total height of the two folded electric cores during packaging, so that the side walls of the two folded shells are flat and have no outward protrusion, and the abrasion and damage possibility of the aluminum-plastic film in the assembling process or the using process are greatly reduced.
As a further improvement of the scheme, the first vertical separating strips and the second vertical separating strips are arranged in parallel at the same height.
As a further improvement of the scheme, a first inverted arc surface which is connected end to end is arranged at the joint of the first vertical separating strip and the transverse separating strip, a second inverted arc surface which is connected end to end is arranged at the joint of the second vertical separating strip and the transverse separating strip, and radians of the first inverted arc surface and the second inverted arc surface are equal.
As a further improvement of the scheme, a third inverted arc surface which is connected end to end is arranged at the joint of the first bottom surface and the first vertical separating strip, a fourth inverted arc surface which is connected end to end is arranged at the joint of the second bottom surface and the second vertical separating strip, and radians of the third inverted arc surface and the fourth inverted arc surface are equal.
As a further improvement of the above scheme, a fifth inverted arc surface connected end to end is arranged at the joint of the first bottom surface and the side wall of the first punching pit, a sixth inverted arc surface connected end to end is arranged at the joint of the second bottom surface and the side wall of the second punching pit, and the radian of the fifth inverted arc surface is the same as that of the sixth inverted arc surface.
As a further improvement of the above scheme, the thicknesses of the first vertical dividing strips, the second vertical dividing strips and the transverse dividing strips are the same.
As a further improvement of the above scheme, the aluminum plastic film further comprises a heat sealing part, and the heat sealing part is arranged at the outer edge of the aluminum plastic film.
The utility model also provides an encapsulation construction, including above-mentioned plastic-aluminum membrane, first towards hole and second towards hole fifty percent discount and form electric core and hold the chamber, wherein the partition holds a lateral wall in chamber for electric core, first vertical parting bead, horizontal parting bead, the vertical parting bead of second are in on the same vertical plane.
The partition part serves as a side wall of the battery cell accommodating cavity, so that one edge sealing of four edge sealing modes is reduced, the volume of the battery cell accommodating cavity is increased on the premise that the using amount of the aluminum-plastic film is not changed, and the energy density of the packaged battery is further improved; secondly, the partition part is used as a side wall of the battery cell accommodating cavity, the first vertical partition strip, the transverse partition strip and the second vertical partition strip are positioned on the same vertical plane, so that the phenomena of protrusion and corrugation of an aluminum-plastic film positioned on one side of the partition part after packaging are avoided, the friction damage between the side wall and the outside in the assembling process or the using process is greatly reduced, and the use reliability of the aluminum-plastic film is improved.
The utility model also provides a laminate polymer battery, include electric core and encapsulate in electric core outlying plastic-aluminum membrane.
Due to the fact that the depth of the first punching pit is the same as that of the second punching pit, the sum of the height of the first vertical separating strip, the height of the second vertical separating strip and the length of the transverse separating strip is equal to twice of the depth of the first punching pit or the second punching pit, after the packaged battery cell is folded in half, the first vertical separating strip, the transverse separating strip and the second vertical separating strip are located on the same vertical plane, the side wall is flat and does not protrude outwards, and the possibility that the aluminum-plastic film is abraded and damaged in the assembling process or the using process is greatly reduced.
Because the utility model adopts the above technical scheme, make the beneficial effect that this application possesses lie in:
the utility model provides an aluminum-plastic film, the first hole of dashing, the second is dashed on the aluminum-plastic film of integral type respectively, first hole and the second of dashing are dashed the hole and are provided for the installation of follow-up electric core and hold the cavity, the total length (the height of first vertical parting strip, the height of second vertical parting strip, the length of horizontal parting strip, the sum of three sizes) of the partition portion that sets up between first hole and the second of dashing is equal to the total height after the fifty percent discount when electric core encapsulates, namely when encapsulating the electric core, first vertical parting strip, horizontal parting strip, second vertical parting strip are in same vertical plane after first hole and the fifty percent discount of second dashing hole, just so make partition portion as a lateral wall in electric core accommodation chamber, make the lateral wall level and smooth no evagination after two casings fifty percent discount, greatly reduce aluminum-plastic film in assembling process or use wearing and damaged possibility; meanwhile, the partition part serves as one side wall of the battery cell accommodating cavity and further reduces one of the sealing edges in the four sealing edge mode, the volume of the battery cell accommodating cavity is increased on the premise that the using amount of the aluminum-plastic film is unchanged, and the energy density of the packaged battery is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a schematic cross-sectional view of a plastic film in a conventional three-sided sealing manner;
FIG. 2 is a schematic cross-sectional view of a plastic film package folded in half in a conventional three-sided sealing manner;
FIG. 3 is a schematic cross-sectional view of the plastic film of the present invention;
FIG. 4 is an enlarged partial schematic view of FIG. 3;
FIG. 5 is a schematic cross-sectional view of the plastic film package of the present invention after being folded in half;
FIG. 6 is a schematic cross-sectional view of a plastic film according to example 1;
the reference numbers are as follows:
1. first pit punching; 11. a first bottom surface; 2. second pit punching; 21. a second bottom surface; 3. a partition portion; 31. a first vertical dividing strip; 32. a second vertical dividing strip; 33. a transverse dividing strip; 4. a first reverse arc surface; 5. a second reverse arc surface; 6. a third reverse arc surface; 7. a fourth reverse arc surface; 8. a fifth reverse arc surface; 9. a sixth reverse arc surface; 10. a heat-seal part;
101. a battery cell accommodating cavity; 102. a side wall;
1-1, a separation structure; 1-2 and a convex structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The invention will be further described with reference to the following figures:
example 1:
referring to fig. 3-6, the utility model provides an aluminum-plastic film, including the first pit 1, the second pit 2 of dashing of stamping forming on aluminum-plastic film, aluminum-plastic film formula as an organic whole, first pit 1 and the second pit 2 of dashing are adjacent and are provided with partition 3 between the two, partition 3 includes first vertical parting strip 31, second vertical parting strip 32 and connects first vertical parting strip 31 and the horizontal parting strip 33 of second vertical parting strip 32, and wherein first pit 1 of dashing has first bottom surface 11, and second pit 2 of dashing has second bottom surface 21, and first bottom surface 11 and second bottom surface 21 are in the coplanar, and the degree of depth of first pit 1 and the degree of depth of second pit 2 of dashing are the same; the sum of the sizes of the height of the first vertical division bar 31, the height of the second vertical division bar 32 and the length of the transverse division bar 33 is equal to twice the depth of the first pit 1 or the second pit 2; specifically, a first punching pit 1 and a second punching pit 2 are respectively punched on the integrated aluminum-plastic film to provide a containing cavity for the installation of a subsequent battery core, and the total length of a partition part 3 (the height of a first vertical partition strip 31, the height of a second vertical partition strip 32, the length of a transverse partition strip 33 and the sum of the sizes of the first vertical partition strip 31 and the transverse partition strip 33) arranged between the first punching pit 1 and the second punching pit 2 is equal to the total height after the battery core is folded, so that the side wall 102 of the folded two shells is flat and free from outward protrusion, and the possibility of abrasion and damage of the aluminum-plastic film in the assembling process or the using process is greatly reduced.
Referring to fig. 6, the depth of the first punched pit 1 and the depth of the second punched pit 2 are both H1, the height of the first vertical dividing strip 31 and the height of the second vertical dividing strip 32 are both H2, and the length of the horizontal dividing strip 33 is H3, in this embodiment, when designing the depth of the two punched pits, it is necessary to satisfy 2H 1-2H 2+ H3, so that the side wall 102 is flat and free of outward protrusion after the two shells are folded in half.
Taking a three-edge sealed soft package battery with a cell thickness of 11mm as an example, in a conventional implementation mode, referring to fig. 1, the depth of two pits is the same as the length of a vertical separating strip, so that the depth of the two pits is about 5.5cm, and the height of a left shell and a right shell after being folded in half is consistent with the thickness of the battery, but due to the existence of a transverse separating strip 33, in order to ensure the strength of a stamping die, the length of the transverse separating strip 33 needs to be about 2-3 mm, and in such an arrangement, after the two pits are folded in half, the length of the transverse separating strip 33 tends to form an.
In the mode of this embodiment, referring to fig. 6, the depth of H1 is 5.5mm, the depth of H2 is 4.5mm, and the depth of H3 is 2mm, so that the 2H 1-2H 2+ H3 is satisfied, and after the two pits are folded in half, the transverse partition strip 33 serves as a vertical part of the aluminum-plastic film side wall 102, so that there is no excessive outward protruding part, and the possibility of abrasion and breakage of the aluminum-plastic film in the assembling process or the using process is greatly reduced; meanwhile, as the depth of the punched pit and the size of the partition 3 are required to satisfy the relation 2H 1-2H 2+ H3, and the length of the transverse division bar 33 is usually 2mm, the depths of the first vertical division bar 31 and the second vertical division bar 32 are reduced as the depth of the punched pit is reduced, and the deformation amount of the aluminum-plastic film is reduced.
Referring to fig. 3 and 6, the depth H2 of the partition 3 of the plastic film (i.e. the length of the first vertical partition strip 31 or the second vertical partition strip 32) is lower than the depth H1 of the first pit 1 or the second pit 2, so that the bottom surface of the pit does not need to be made into an inclined surface like the scheme disclosed in the publication No. CN209561464U, the bottom surface of the inclined surface inevitably increases the complexity of the pit-punching mold design and the mold cost, and simultaneously, in the pit-punching process, the mold core of the pit-punching mold needs to provide a larger impact force to form the aluminum-plastic film, and the inclined surface is arranged to cause uneven stress and poor long-term operation stability, and the first bottom surface 11 of the first pit 1 and the first bottom surface 11 of the second pit 2 of the aluminum-plastic film provided by the present invention are both straight surfaces and are in the same plane, thereby greatly reducing the processing difficulty and the mold cost of the mold, and contributes to the stable operation of the pit punching die.
As a preferred embodiment, in order to facilitate processing of a stamping die for stamping an aluminum-plastic film, in this embodiment, the first vertical dividing strips 31 and the second vertical dividing strips 32 are arranged in parallel at equal heights; in practical application, the heights of the first vertical dividing strip 31 and the second vertical dividing strip 32 can be adjusted according to the thickness of the battery cell, and the heights of the first vertical dividing strip 31 and the second vertical dividing strip 32 can also be set to be different, but the premise is that the sum of the heights of the first vertical dividing strip 31, the second vertical dividing strip 32 and the length of the transverse dividing strip 33 is equal to the depth of the first punching pit 1 or twice the depth of the second punching pit 2, so that when the battery cell accommodating cavity 101 is formed by packaging the aluminum-plastic film, the height of the first vertical dividing strip 31, the height of the second vertical dividing strip 32 and the transverse dividing strip 33 are located on the same vertical plane, and the outer protrusion of the side wall 102 after the two casings are folded is avoided.
As a preferred embodiment, referring to fig. 3, a first inverted arc surface 4 connected end to end is arranged at the joint of the first vertical separating strip 31 and the horizontal separating strip 33, a second inverted arc surface 5 connected end to end is arranged at the joint of the second vertical separating strip 32 and the horizontal separating strip 33, and radians of the first inverted arc surface 4 and the second inverted arc surface 5 are equal; first 4 and the 5 radians of second cambered surface of falling arc surface set up, turn over a 3 at the partition and turn over a degree of laminating that first vertical parting bead 31 and the vertical parting bead 32 of second are in same vertical plane on at first improvement and electric core, improve encapsulation quality, secondly reduced the appearance of outside outstanding and fold.
As a preferred embodiment, referring to fig. 3, a third inverted arc surface 6 connected end to end is arranged at the joint of the first bottom surface 11 and the first vertical dividing strip 31, a fourth inverted arc surface 7 connected end to end is arranged at the joint of the second bottom surface 21 and the second vertical dividing strip 32, and radians of the third inverted arc surface 6 and the fourth inverted arc surface 7 are equal; the setting of third cambered surface 6 and the 7 radians of fourth cambered surface can be with first towards hole 1 and the second towards four edges and the angular position stress dispersion of 2 bottoms in hole, avoid damaged especially in angular position department, secondly improve the aesthetic feeling of outward appearance.
As a preferred embodiment, referring to fig. 3, a fifth inverted arc surface 8 connected end to end is arranged at a joint of the first bottom surface 11 and the side wall 102 of the first punching pit 1, a sixth inverted arc surface 9 connected end to end is arranged at a joint of the second bottom surface 21 and the side wall 102 of the second punching pit 2, and the radians of the fifth inverted arc surface 8 and the sixth inverted arc surface 9 are the same; the setting of fifth inverted arc face and sixth inverted arc face radian can be with first towards hole 1 and the second towards four edges and the angular position stress dispersion of 2 bottoms in hole, avoids damaged especially in angular position department, secondly improves the aesthetic feeling of outward appearance.
As a preferred embodiment, referring to fig. 3, the thicknesses of the first vertical division bar 31, the second vertical division bar 32, and the horizontal division bar 33 are the same.
As a preferred embodiment, referring to fig. 3, the aluminum plastic film further comprises a heat sealing portion 10, and the heat sealing portion 10 is located at the outer edge of the aluminum plastic film.
Example 2:
referring to fig. 4, the utility model also provides an encapsulation structure, including above-mentioned plastic-aluminum membrane, first dashing hole 1 and second towards hole 2 fifty percent discount and form electric core and hold chamber 101, wherein partition 3 holds a lateral wall 102 of chamber 101 for electric core, first vertical parting bead 31, horizontal parting bead 33, the vertical parting bead 32 of second are in on the same vertical plane.
The partition part 3 serves as a side wall 102 of the battery cell accommodating cavity 101, so that one edge sealing in a four-edge sealing mode is reduced, the volume of the battery cell accommodating cavity 101 is increased on the premise that the using amount of the aluminum-plastic film is not changed, and the energy density of the packaged battery is improved; secondly, the partition part 3 serves as a side wall 102 of the battery cell accommodating cavity 101, and the first vertical partition strip 31, the horizontal partition strip 33 and the second vertical partition strip 32 are located on the same vertical plane, so that the phenomenon that an aluminum-plastic film located on one side of the partition part 3 protrudes and folds after being packaged is avoided, that is, the friction damage between the side wall 102 and the outside in the assembling process or the using process is greatly reduced, and the use reliability of the aluminum-plastic film is improved.
Example 3:
the utility model also provides a laminate polymer battery, include electric core and encapsulate in electric core outlying plastic-aluminum membrane. Due to the fact that the depth of the first punched pit 1 is the same as that of the second punched pit 2, and the sum of the height of the first vertical separating strip 31, the height of the second vertical separating strip 32 and the length of the transverse separating strip 33 is equal to twice of the depth of the first punched pit 1 or the second punched pit 2, after the packaged battery cell is folded in half, the first vertical separating strip 31, the transverse separating strip 33 and the second vertical separating strip 32 are located on the same vertical plane, the side wall 102 is flat and does not protrude outwards, and the possibility that the aluminum-plastic film is abraded and damaged in the assembling process or the using process is greatly reduced.
The above is a detailed introduction of the present invention, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the explanations of the above embodiments are only used to help understand the methods and core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. An aluminum-plastic film is characterized by comprising a first punching pit and a second punching pit, wherein the first punching pit and the second punching pit are adjacent, a separation part is arranged between the first punching pit and the second punching pit, the separation part comprises a first vertical separation strip, a second vertical separation strip and a transverse separation strip for connecting the first vertical separation strip and the second vertical separation strip, the first punching pit is provided with a first bottom surface, the second punching pit is provided with a second bottom surface, the first bottom surface and the second bottom surface are positioned on the same plane, and the depth of the first punching pit is the same as that of the second punching pit; the sum of the sizes of the height of the first vertical separating strips, the height of the second vertical separating strips and the length of the transverse separating strips is equal to twice of the depth of the first pit punching or the second pit punching.
2. The aluminum-plastic composite film of claim 1, wherein the first vertical dividing strips and the second vertical dividing strips are arranged in parallel and at the same height.
3. The aluminum-plastic film of claim 1 or 2, wherein a first inverted arc surface is arranged at the joint of the first vertical separating strip and the transverse separating strip in an end-to-end manner, a second inverted arc surface is arranged at the joint of the second vertical separating strip and the transverse separating strip in an end-to-end manner, and the radian of the first inverted arc surface is equal to that of the second inverted arc surface.
4. The aluminum-plastic film of claim 1 or 2, wherein a third inverted arc surface is arranged at the joint of the first bottom surface and the first vertical separating strip in an end-to-end manner, a fourth inverted arc surface is arranged at the joint of the second bottom surface and the second vertical separating strip in an end-to-end manner, and the radian of the third inverted arc surface is equal to that of the fourth inverted arc surface.
5. The aluminum-plastic film of claim 1 or 2, wherein a fifth inverted arc surface is arranged at the joint of the first bottom surface and the side wall of the first punching pit in an end-to-end manner, a sixth inverted arc surface is arranged at the joint of the second bottom surface and the side wall of the second punching pit in an end-to-end manner, and the radian of the fifth inverted arc surface is identical to that of the sixth inverted arc surface.
6. An aluminium-plastic composite film according to claim 1 or 2, wherein the first vertical dividing strip, the second vertical dividing strip and the transverse dividing strip are all the same thickness.
7. The aluminum-plastic film of claim 1 or 2, further comprising a heat seal portion at the outer edge of the aluminum-plastic film.
8. The aluminum-plastic composite film of claim 1 or 2, wherein the aluminum-plastic composite film is one-piece, and the first punched pit and the second punched pit are formed by punching.
9. An encapsulation structure, comprising the aluminum-plastic film according to any one of claims 1 to 8, wherein the first punched pit and the second punched pit are folded in half to form a cell accommodating cavity, wherein the partition is a sidewall of the cell accommodating cavity, and the first vertical partition, the horizontal partition, and the second vertical partition are located on the same vertical plane.
10. A soft package battery, which is characterized by comprising a battery cell and the aluminum plastic film of any one of claims 1 to 8 packaged at the periphery of the battery cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022088311.1U CN213692195U (en) | 2020-09-22 | 2020-09-22 | Plastic-aluminum membrane, packaging structure and laminate polymer battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022088311.1U CN213692195U (en) | 2020-09-22 | 2020-09-22 | Plastic-aluminum membrane, packaging structure and laminate polymer battery |
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| Publication Number | Publication Date |
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| CN213692195U true CN213692195U (en) | 2021-07-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361598A (en) * | 2021-12-04 | 2022-04-15 | 万向一二三股份公司 | Unequal-wall double-pit shell punching method for external package of soft package battery and battery thereof |
| WO2023050180A1 (en) * | 2021-09-29 | 2023-04-06 | 东莞新能源科技有限公司 | Electrochemical device and electrical apparatus |
-
2020
- 2020-09-22 CN CN202022088311.1U patent/CN213692195U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023050180A1 (en) * | 2021-09-29 | 2023-04-06 | 东莞新能源科技有限公司 | Electrochemical device and electrical apparatus |
| CN114361598A (en) * | 2021-12-04 | 2022-04-15 | 万向一二三股份公司 | Unequal-wall double-pit shell punching method for external package of soft package battery and battery thereof |
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