CN215896476U - Soft-package battery top sealing head - Google Patents
Soft-package battery top sealing head Download PDFInfo
- Publication number
- CN215896476U CN215896476U CN202121575760.7U CN202121575760U CN215896476U CN 215896476 U CN215896476 U CN 215896476U CN 202121575760 U CN202121575760 U CN 202121575760U CN 215896476 U CN215896476 U CN 215896476U
- Authority
- CN
- China
- Prior art keywords
- sealing
- top seal
- seal
- battery
- polymer battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 60
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 48
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229920000642 polymer Polymers 0.000 claims abstract description 31
- 239000004411 aluminium Substances 0.000 claims abstract description 18
- 238000003475 lamination Methods 0.000 claims abstract description 18
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 238000002788 crimping Methods 0.000 claims abstract description 5
- 239000003292 glue Substances 0.000 abstract description 9
- 239000003792 electrolyte Substances 0.000 abstract description 5
- 239000004743 Polypropylene Substances 0.000 description 15
- 239000002985 plastic film Substances 0.000 description 14
- 229920006255 plastic film Polymers 0.000 description 14
- 238000003825 pressing Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 102000004310 Ion Channels Human genes 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a laminate polymer battery top seal head, including the head body, set up the top seal groove that two intervals set up on the head body, be provided with the top on the diapire in one of them top seal groove and seal the arch, the head body is used for when sealing the laminate polymer battery top, so that the PP layer of top seal groove with the plastic-aluminum membrane glues to laminate polymer battery's utmost point ear, and make the protruding aluminium lamination crimping to the positive ear with the plastic-aluminum membrane of top seal, and so, when sealing the laminate polymer battery top, the top seals the arch and can be with the aluminium lamination crimping to positive ear in the plastic-aluminum membrane, make positive ear and aluminium lamination be in same electric potential, even the PP of laminate polymer battery inlayer appears damaged, lead to electrolyte and aluminium lamination contact, also can effectively avoid polymer battery's aluminium lamination to be corroded.
Description
Technical Field
The utility model relates to the field of packaging of soft-package batteries, in particular to a top sealing head of a soft-package battery.
Background
The soft package battery uses the aluminum-plastic film as a shell for packaging, the aluminum-plastic film is generally composed of a nylon layer, an aluminum layer and a PP layer (wherein the PP layer refers to polypropylene), and the weight of the battery can be effectively reduced and the energy density of the battery can be improved by using the aluminum-plastic film.
Laminate polymer battery's sealed heat-seal through the plastic-aluminum membrane realizes, and the heat-seal generally includes top seal, side seal, one and two seals, and wherein the top seal is to placing one side of utmost point ear and encapsulating, and utmost point ear glue on the utmost point ear can melt with the PP layer of plastic-aluminum membrane and bond as an organic whole when the top seals.
The quality of the heat sealing effect has direct influence on the sealing performance of the battery, the temperature, the pressure, the heat sealing time, the temperature consistency of the end socket and the flatness of the end socket all influence the quality of the packaging effect, the structure of the PP layer and the aluminum layer at the glue overflow area is changed, which causes the adhesive force between the PP layer and the aluminum layer at the glue overflow area to be lowered, in the subsequent formation process, the soft package battery generates gas and expands, the internal pressure is increased, the tearing of the PP layer and the aluminum layer is easily caused, the aluminum layer is contacted with the electrolyte, thereby forming an ion channel, the electrochemical corrosion is formed, the aluminum layer is continuously corroded, the water-resisting effect is finally lost, the water inflow and the air inflation of the battery are finally caused, the failure and the liquid leakage are further caused, therefore, designing a top seal head for sealing a pouch battery to avoid corrosion of the pouch battery is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a top sealing head of a soft package battery, which is used for sealing the top of the soft package battery and can effectively prevent an aluminum layer of the soft package battery from being corroded.
The purpose of the utility model is realized by the following technical scheme:
a laminate polymer battery top seal head, includes:
the end socket comprises an end socket body, wherein two top sealing grooves are formed in the end socket body at intervals, and a top sealing bulge is formed in the bottom wall of one of the top sealing grooves;
the head body is used for carrying out the top to the laminate when sealing to laminate polymer battery, so that the PP layer of plastic-aluminum membrane is glued to polymer battery's utmost point ear to the top seal groove, and makes the protruding aluminium lamination crimping of plastic-aluminum membrane to anodal ear of top seal.
In one embodiment, the end of the top sealing bulge is a curved surface structure protruding away from the seal head body.
In one embodiment, the top sealing bulge is provided in plurality, and each top sealing bulge is positioned on the bottom wall of one top sealing groove.
In one embodiment, the capping groove comprises a bottom surface and two side surfaces, and the bottom surface is respectively connected with the two side surfaces to jointly form the capping groove.
In one embodiment, the side surface and the bottom surface are perpendicular to each other.
In one embodiment, the side surface comprises a limiting part and a pressing part, and the pressing part is respectively connected with the limiting part and the bottom surface.
In one embodiment, the included angle between the surface of the pressing part and the bottom surface is 5-8 degrees.
In one embodiment, an expansion seal boss is further arranged on one side face of the end socket body and located between the two top seal grooves.
In one embodiment, the flared seal boss is provided in a trapezoidal configuration.
In one embodiment, the height of the trapezoid expansion seal boss is 5 mm-12 mm.
Compared with the prior art, the utility model has at least the following advantages:
1. when laminate polymer battery top sealing head seals laminate polymer battery top, the top seals the arch and can be with the aluminium lamination crimping in the plastic-aluminum membrane to anodal ear for anodal ear is in same electric potential with the aluminium lamination, even the PP on laminate polymer battery inlayer appears damaged, leads to electrolyte and aluminium lamination to contact, also can effectively avoid laminate polymer battery's aluminium lamination to be corroded.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a pouch battery top sealing head according to an embodiment of the present invention;
fig. 2 is a partial schematic structural view of an embodiment of the pouch cell top sealing head shown in fig. 1;
fig. 3 is a partial schematic structural view of another embodiment of the pouch battery top sealing head shown in fig. 1.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings.
Referring to fig. 1, a top seal head 10 for a soft package battery comprises a head body 100, two top seal grooves 110 are formed in the head body 100 at intervals, a top seal protrusion 120 is formed on the bottom wall of one of the top seal grooves 110, and when the head body 100 is used for top sealing the soft package battery, the top seal groove 110 presses PP layers of an aluminum-plastic film to tab glue of the soft package battery, and the top seal protrusion 120 presses an aluminum layer of the aluminum-plastic film to the tab glue.
It should be noted that the two top sealing grooves 110 are both located on the same side surface of the head body 100, when the head body 100 seals the soft-package battery, the two top sealing grooves 110 are aligned with the positive and negative electrode tabs of the soft-package battery respectively, that is, one of the top sealing grooves 110 is aligned with the positive electrode tabs, and the other top sealing groove 110 is aligned with the negative electrode tabs, so that as the head body 100 contacts the soft-package battery for sealing, the bottom wall of the top sealing groove 110 contacts with the outer side of the aluminum plastic film of the soft-package battery, and pushes the aluminum plastic film to press the tab glue, so that the tab glue is heated and bonded with the PP layer of the aluminum plastic film; further, only set up the protruding 120 of top seal on the diapire of one of them top seal groove 110, moreover, when head body 100 carries out the top seal to laminate polymer battery, the top seal groove 110 that is provided with the protruding 120 of top seal aligns with laminate polymer battery's anodal ear, so, when the top seal, the protruding 120 of top seal can extrude the aluminium lamination of plastic-aluminum membrane and the PP between the anodal ear, make PP can spill over toward the edge of the protruding 120 of top seal, the protruding 120 aluminium lamination and the anodal ear strap direct contact that can push away the plastic-aluminum membrane of top seal, make the aluminium lamination and the anodal ear of plastic-aluminum membrane be in same electric potential.
The laminate polymer battery who seals the head 10 and carry out the top to seal of laminate polymer battery's that has used this application effect explains down, because laminate polymer battery's positive ear and the aluminium lamination of plastic-aluminum membrane are connected, make the two be in same electric potential, promptly with the positive pole that is laminate polymer battery, and the negative pole ear still is laminate polymer battery's negative pole, so, there is the damage on the inboard PP layer of plastic-aluminum membrane in laminate polymer battery, lead to electrolyte and aluminium lamination direct contact, however, because positive ear utmost point ear has higher priority than the aluminium lamination of plastic-aluminum membrane, consequently, the aluminium lamination of damaged department can not corroded to electrolyte, but can normally discharge through positive ear.
Further, it should be noted that, in the top sealing operation performed on the pouch cell, paired end sockets often need to be used, that is, an upper end socket and a lower end socket are usually included, so the top sealing head 10 of the pouch cell of the present application can be used as both an upper end socket and a lower end socket, further, can be used as both an upper end socket and a lower end socket, but when being used together as an upper end socket and a lower end socket, it is necessary to ensure that the top sealing protrusions 120 are aligned to each other for use, so that it is ensured that only the top-pushed aluminum-plastic film is connected with the positive electrode tab, but not the aluminum-plastic film is connected with the negative electrode tab.
Further, in order to prevent the top sealing protrusion 120 from penetrating through the aluminum-plastic film, please refer to fig. 2, the end of the top sealing protrusion 120 is configured as a curved structure protruding away from the end socket body 100. That is, the end surface of the top sealing protrusion 120 is set to be a curved surface structure, so that when the top sealing protrusion 120 presses the aluminum-plastic film, the aluminum-plastic film can be effectively prevented from being damaged by pressing.
In one embodiment, the capping protrusion 120 is provided in a plurality, and each capping protrusion 120 is located on the bottom wall of one of the capping grooves 110. It should be noted that, by providing a plurality of top sealing protrusions 120, the probability of reliable contact between the aluminum layer of the aluminum-plastic film and the positive tab can be improved, and the problem of poor contact between the aluminum layer and the positive tab is avoided.
Referring to fig. 2, in one embodiment, the capping groove 110 includes a bottom surface 111 and two side surfaces 112, and the bottom surface 111 is connected to the two side surfaces 112 respectively to form the capping groove 110. Top seal groove 110 is enclosed by bottom surface 111 and two side 112 jointly, in an embodiment, side 112 and bottom surface 111 are vertical structure, so, because utmost point ear glue is a type of rectangle structure, set up top seal groove 110 to the right angle structure, can agree with utmost point ear glued appearance to the at utmost, make the soft-packaged battery's that utilizes soft-packaged battery top seal head 10 of this application to carry out the top seal can be more firm, make the PP layer between the plastic-aluminum membrane can better melt and combine together.
Further, referring to fig. 3, in one embodiment, the side surface 112 includes a limiting portion 112a and a pressing portion 112b, and the pressing portion 112b is connected to the limiting portion 112a and the bottom surface 111, respectively. It should be noted that, the side 112 is formed by connecting limiting portion 112a and pressing portion 112b, wherein, the included angle between the surface of limiting portion 112a and bottom surface 111 is a right angle, and the included angle D between the surface of pressing portion 112b and bottom surface 111 is 5 ° -8 °, for example, the included angle between the surface of pressing portion 112b and bottom surface 111 can also be 6 °, 7 °, it needs to be noted that, pressing portion 112b is set to an inclined structure, when the top sealing operation is performed on the pouch battery, a certain chamfer structure can be provided at the heat-sealed part of the pouch battery, so that sharp edges cannot appear in the appearance of the pouch battery, and the appearance of the pouch battery can be more beautiful.
Referring to fig. 1 again, in one embodiment, an expansion seal boss 130 is further disposed on one side surface of the head body 100, and the expansion seal boss 130 is located between the two top seal grooves 110. What need to say is that expand seal boss 130 can increase the area of sealing when laminate polymer battery top seal head 10 is used for carrying out the top seal to laminate polymer battery, so, when carrying out the corner cut operation to laminate polymer battery in the later stage, can effectively avoid cutting the laminate polymer battery brokenly.
Referring to fig. 1 again, in an embodiment, the expansion sealing boss 130 is a trapezoid structure, for example, a right trapezoid structure may be provided, so that the sealing position of the pouch battery is more beautiful and firmer, in an embodiment, the height H of the trapezoid expansion sealing boss is 5mm to 12mm, for example, the height H may also be 6mm, 7mm, 8mm, 9mm, 10mm, or 11mm, so that the height of the expansion sealing boss 130 is set according to the size of the pouch battery, so that the sealing of the pouch battery can be firmer, and the problem of liquid leakage caused by incomplete sealing of the pouch battery is effectively avoided; further, also can set up expansion seal boss 130 as required into rectangle structure, triangle-shaped structure, outside guaranteeing that laminate polymer battery is more reliable, still make by laminate polymer battery's top seal more pleasing to the eye.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a laminate polymer battery top seal head which characterized in that includes:
the end socket comprises an end socket body, wherein two top sealing grooves are formed in the end socket body at intervals, and a top sealing bulge is formed in the bottom wall of one of the top sealing grooves;
the head body is used for carrying out the top to the laminate when sealing to laminate polymer battery, so that the PP layer of plastic-aluminum membrane is glued to polymer battery's utmost point ear to the top seal groove, and makes the protruding aluminium lamination crimping of plastic-aluminum membrane to anodal ear of top seal.
2. The pouch cell top seal head according to claim 1, wherein the end of the top seal protrusion is arranged to be a curved surface structure protruding in a direction away from the head body.
3. The top seal head for the soft-package battery is characterized in that the top seal bulge is arranged in plurality, and each top seal bulge is positioned on the bottom wall of one top seal groove.
4. The pouch cell top sealing head according to claim 1 or 2, wherein the top sealing groove comprises a bottom surface and two side surfaces, and the bottom surface is respectively connected with the two side surfaces to jointly form the top sealing groove.
5. The pouch cell header as recited in claim 4 wherein the side surfaces are perpendicular to the bottom surface.
6. The pouch battery top-sealing head according to claim 4, wherein the side surface comprises a limiting part and a compressing part, and the compressing part is connected with the limiting part and the bottom surface respectively.
7. The pouch cell header seal head according to claim 6, wherein the included angle between the surface of the compacting part and the bottom surface is 5-8 °.
8. The soft-package battery top sealing head according to claim 1 or 2, wherein an expansion sealing boss is further arranged on one side face of the head body, and the expansion sealing boss is located between the two top sealing grooves.
9. The laminate battery top sealing head according to claim 8, wherein the expansion sealing boss is arranged in a trapezoidal structure.
10. The top seal end socket of the soft-package battery according to claim 9, wherein the height of the trapezoidal flaring seal boss is 5 mm-12 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121575760.7U CN215896476U (en) | 2021-07-12 | 2021-07-12 | Soft-package battery top sealing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121575760.7U CN215896476U (en) | 2021-07-12 | 2021-07-12 | Soft-package battery top sealing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215896476U true CN215896476U (en) | 2022-02-22 |
Family
ID=80561967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121575760.7U Active CN215896476U (en) | 2021-07-12 | 2021-07-12 | Soft-package battery top sealing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215896476U (en) |
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2021
- 2021-07-12 CN CN202121575760.7U patent/CN215896476U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |