CN218385435U - Cooling fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film - Google Patents
Cooling fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film Download PDFInfo
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- CN218385435U CN218385435U CN202220559783.7U CN202220559783U CN218385435U CN 218385435 U CN218385435 U CN 218385435U CN 202220559783 U CN202220559783 U CN 202220559783U CN 218385435 U CN218385435 U CN 218385435U
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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 relates to a but cooling type of putting out a fire flame retardant lithium ion battery plastic-aluminum membrane, the utility model discloses a can cool off type of putting out a fire coating that lowers the temperature at the outer coating of plastic-aluminum membrane, or compound one deck can cool off the prefabricated rete of type of putting out a fire, coating or prefabricated in-film contain fire-retardant, the microcapsule powder of cooling function of putting out a fire attaches to the outmost of plastic-aluminum membrane, when lithium ion battery takes place thermal runaway or conflagration, microcapsule in the coating breaks, releases fire-retardant, puts out a fire and cools off the cooling composition, plays and put out a fire rapidly and cooling battery effect, prevents that the battery from catching fire and explosion probability, especially to the group battery in power and the energy storage, can reduce the whole destruction of single electric core temperature out of control to the group battery rapidly, can protect the whole safety of whole group battery. The aluminum plastic film is suitable for soft package batteries and hard shell batteries.
Description
Technical Field
The utility model relates to a battery packaging material field, in particular to but cooling type fire-retardant lithium ion battery plastic-aluminum membrane of putting out a fire.
Background
Along with the technical improvement and the increase of the yield of soft package lithium ion batteries in recent years, the requirements of soft package lithium ion battery packaging materials, particularly the packaging of flat soft package batteries of mobile phones, are getting bigger and bigger, and an aluminum plastic film is a key material for packaging soft package lithium ion batteries and has become a mainstream of application development of soft package lithium ion battery packaging composite materials in the future.
Traditional plastic-aluminum membrane comprises outer protective layer, middle aluminium foil barrier layer and inlayer heat-seal layer basically, bonds with the adhesive between the layer, and outer protective layer generally chooses nylon to select to compound, selects polyethylene terephthalate (PET) to strengthen compounding now in addition, improves combined material's barrier properties, antifriction performance, uses black membrane to carry out battery encapsulation colour and changes the sight simultaneously. However, the lithium ion battery inevitably faces damages such as extrusion, puncture, temperature shock, overcharge, short circuit and the like during long-term use and storage, and the lithium ion battery is burnt and even explodes. In recent years, explosion accidents such as mobile phones, electric vehicles, energy storage power stations and the like frequently occur, and serious equipment damage and casualties are caused, so that the safety problem of the lithium ion battery is very important to solve. The safety mode of the traditional improved lithium ion battery basically focuses on improving the materials of an inner core and a diaphragm of the battery, but innovation is needed for improving the safety of the lithium ion battery from the improvement of an aluminum plastic film.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a but cooling type of putting out a fire flame retardant lithium ion battery plastic-aluminum membrane is provided, this plastic-aluminum membrane removes to have excellent insulating properties, separation performance, chemical stability can, still has fire-retardant, puts out a fire and cooling function.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a but cooling fire extinguishing type flame retardant lithium ion battery plastic-aluminum membrane, this plastic-aluminum membrane be for having 6 layers or 8 layers of structures, by copolymerization propylene layer, aluminium foil layer, nylon layer or nylon and polyethylene glycol terephthalate composite bed, adhesive layer and cooling fire extinguishing coating layer or cooling fire extinguishing prefabrication rete etc. multiple material coating complex respectively form. The 6-layer aluminum plastic film sequentially comprises a copolymerized propylene layer CPP, an adhesive layer, an aluminum foil layer AL, an adhesive layer, a nylon layer and a cooling fire-extinguishing coating layer from inside to outside; the 8-layer aluminum plastic film sequentially comprises a copolymer propylene layer CPP, an adhesive layer, an aluminum foil layer AL, an adhesive layer, a nylon layer, an adhesive layer, a polyethylene terephthalate layer and a cooling fire-extinguishing coating layer from inside to outside. The paint type in the paint layer is selected from one of water paint, solvent paint, powder paint and high solid powder paint, and the solvent paint is preferred. The size thickness of the coating layer or the prefabricated film layer is 1-100um, and the coating contains flame-retardant, cooling and fire-extinguishing microcapsule powder, preferably 5-25um.
The above-mentioned aluminum plastic film, solvent-based coating preferably contains fluorine polyurethane coating or polyester polyurethane coating or acrylic polyurethane coating. The coating resin is preferably a fluororesin andor a tetrafluoroethylene resin andor in combination with other resins.
The aluminum plastic film and the powder coating are selected from thermosetting or thermoplastic powder coatings. The film forming material in the thermosetting powder coating is one or a combination of epoxy powder, polyester powder and polyacrylate powder; the film forming material in the thermoplastic powder coating is selected from one or a plurality of combinations of polyvinyl chloride powder, nylon powder, fluororesin powder and latex powder, and is mixed with the flame-retardant, temperature-reducing and fire-extinguishing microcapsule powder, wherein the proportion of the film forming material to the capsule powder is 8.
Above-mentioned plastic-aluminum membrane, its dope layer also can be prefabricated membrane material, makes up with other layers of plastic-aluminum membrane through the mode of dry-type complex. The prefabricated film material preferably adopts a fluorine-containing material as a bonding main body, and is mixed with the flame-retardant, cooling and fire-extinguishing microcapsule powder.
The coating or the prefabricated film of the aluminum plastic film has a core-shell structure of microcapsule powder, the core layer material mainly comprises flame-retardant fire-extinguishing components and cooling components, and the shell layer material is melamine-urea-formaldehyde resin or melamine-urea-epoxy resin, melamine-urea-polyacrylate resin or montmorillonite or a combination thereof.
The core layer material in the microcapsule powder of the aluminum-plastic film has flame retardant and fire extinguishing components of one or a combination of halogen flame retardant, phosphorus flame retardant, nitrogen flame retardant and inorganic flame retardant. The halogen-based flame retardant is one or a combination of fluorine-based substances such as perfluoro (2-methyl-3-pentanone), the phosphorus-based flame retardant is one or a combination of inorganic substances such as ammonium polyphosphate and ammonium phosphate and organic substances such as phosphate and organic hypophosphite, the nitrogen-based flame retardant is one or a combination of melamine and melamine cyanurate, and the inorganic flame retardant is one or a combination of aluminum hydroxide and magnesium hydroxide. The coolant in the core layer material in the microcapsule powder is used for high-temperature rapid heat absorption sublimation materials, and the components are preferably one or a combination of more of 1,2, 3, 4-Heptafluorocyclopentane (HFC) or homologues thereof, PA6, jade powder, zirconium dioxide powder, silicon dioxide powder, a dispersing agent and a coupling agent.
The aluminum plastic film is formed by gluing and laminating polypropylene, aluminum foil, nylon and polyethylene terephthalate in the aluminum plastic film, and the coating layer is formed by one or a combination of brushing, spraying, rolling, dipping and electrophoresis.
The invention provides a coolable fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film which is suitable for soft package batteries and hard shell batteries.
After the technical scheme is adopted, the beneficial effects of the utility model are that: the surface of the aluminum-plastic film is coated with effective components containing flame retardance, fire extinguishment and cooling, and under the condition that a certain battery or batteries in the battery pack are out of control and run away from temperature, the microcapsules are broken at a certain temperature to release the flame retardance, fire extinguishment and cooling components in the capsules, so that an early fire source can be extinguished, and the dual functions of flame retardance and fire extinguishment are realized. Meanwhile, the coolant in the microcapsule can realize rapid cooling of temperature, so that secondary combustion of the battery is prevented, and the battery pack and the battery can be safely protected.
Drawings
FIG. 1 is a schematic view of an aluminum-plastic film (6 layers) of a coolable fire-extinguishing type flame-retardant lithium ion battery of the present invention;
fig. 2 is a schematic view of an aluminum-plastic film (8 layers) of a coolable fire-extinguishing type flame-retardant lithium ion battery of the invention.
Wherein:
1. the paint comprises a polypropylene copolymer layer CPP, a 2 adhesive layer, a 3 aluminum foil layer AL, a 4 adhesive layer, a 5 nylon layer, a6 paint layer, a 7 adhesive layer and a 8 polyethylene terephthalate layer.
Detailed Description
In order to make the objects and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following examples (taking 6-layer structure aluminum plastic film as an example). It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in figure 1, the utility model provides a but cooling type of putting out a fire hinders and fires lithium ion battery plastic-aluminum membrane, it includes in proper order from inside to outside for copolymerization propylene layer CPP (1), adhesive layer (2), aluminium foil layer AL (3), adhesive layer (4), nylon layer (5), dope layer (6).
The coating type in the coating layer of the aluminum plastic film is one of water-based coating, solvent-based coating, powder coating and high-solid powder coating, and the solvent-based coating is preferred. The size thickness of the coating layer or the prefabricated film layer is 1-100um, and the coating contains flame-retardant, cooling and fire-extinguishing microcapsule powder, preferably 5-25um.
The aluminum plastic film and the solvent type coating are preferably one of fluorine-containing polyurethane coating, polyester polyurethane coating or acrylic polyurethane coating. The coating resin is preferably a fluororesin andor a tetrafluoro resin andor in combination with other resins.
The aluminum plastic film and the powder coating are selected from one of thermosetting or thermoplastic powder coatings. The film forming material in the thermosetting powder coating is one or a combination of epoxy powder, polyester powder and polyacrylate powder; the film forming material in the thermoplastic powder coating is selected from one or a plurality of polyvinyl chloride powder, nylon powder, fluororesin powder and latex powder, and is mixed with the flame-retardant, cooling and fire-extinguishing microcapsule powder, the proportion of the film forming material to the capsule powder is 8.
The coating layer of the aluminum-plastic film can also be a prefabricated film material and is combined with other layers of the aluminum-plastic film in a dry compounding way. The prefabricated film material preferably adopts a fluorine-containing material as a bonding main body, and is mixed with the flame-retardant, cooling and fire-extinguishing microcapsule powder.
The coating or the prefabricated film of the aluminum-plastic film is provided with microcapsule powder in a core-shell structure, the core layer material mainly comprises a flame-retardant fire-extinguishing component and a cooling component, and the shell layer material is one or a combination of melamine-urea-formaldehyde resin or melamine-urea-epoxy resin, melamine-urea-polyacrylate resin and montmorillonite.
The core layer material in the microcapsule powder of the aluminum-plastic film has flame retardant and fire extinguishing components of one or a combination of halogen flame retardant, phosphorus flame retardant, nitrogen flame retardant and inorganic flame retardant. The halogen flame retardant is one or a combination of fluorine-containing substances such as perfluoro (2-methyl-3-pentanone), the phosphorus flame retardant is one or a combination of inorganic substances such as ammonium polyphosphate and ammonium phosphate and organic substances such as phosphate and organic hypophosphite, the nitrogen flame retardant is one or a combination of melamine and melamine cyanurate, and the inorganic flame retardant is one or a combination of aluminum hydroxide and magnesium hydroxide. The coolant in the core layer material in the microcapsule powder is used for a high-temperature rapid heat absorption sublimation material, and the component is preferably one or a combination of more of 1,2, 3, 4-Heptafluorocyclopentane (HFC) or homologues thereof, PA6, jade powder, zirconium dioxide powder, silicon dioxide powder, a dispersing agent and a coupling agent.
The invention also provides an 8-layer structure of the coolable fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film, which sequentially comprises a propylene copolymer layer CPP (1), an adhesive layer (2), an aluminum foil layer AL (3), an adhesive layer (4), a nylon layer (5), an adhesive layer (7), a polyethylene terephthalate layer (8) and a coating layer (6) from inside to outside.
The aluminum plastic film is formed by gluing and laminating polypropylene, aluminum foil, nylon and polyethylene glycol terephthalate in the aluminum plastic film, and the coating layer is formed by one or a combination of brushing, spraying, roller coating, dipping and electrophoresis.
The aluminum plastic film of the coolable fire-extinguishing type flame-retardant lithium ion battery can be suitable for soft-package batteries and hard-shell batteries.
The utility model discloses a laminate polymer battery is made to the product and reaches following index through the survey:
1. through an ignition test of the soft package battery, the aluminum plastic film coating microcapsule is broken, open fire suppression and flame retardance can be realized within 8s, and secondary combustion is avoided;
2. the released coolant allowed the cell to cool rapidly from 800 c to 30 c by placing the cell on a heated hot plate for observation through a cell warm-up test.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides a but cooling type of putting out a fire hinders lithium ion battery plastic-aluminum membrane which characterized in that, this plastic-aluminum membrane is copolymerization propylene layer CPP (1), adhesive layer (2), aluminium foil layer AL (3), adhesive layer (4), nylon layer (5), cooling fire extinguishing coating layer (6) from inside to outside in proper order.
2. The coolable fire-extinguishing type flame-retardant lithium ion battery aluminum-plastic film according to claim 1, wherein the thickness of the temperature-reducing fire-extinguishing coating layer is 1-100um.
3. The coolable fire-extinguishing type flame-retardant lithium ion battery aluminum-plastic film is characterized in that an adhesive layer (7) and a polyethylene terephthalate layer (8) are further arranged between the nylon layer (5) and the temperature-reducing fire-extinguishing coating layer (6).
4. The coolable fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film according to claim 1, which is suitable for soft-package batteries and hard-shell batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220559783.7U CN218385435U (en) | 2022-03-15 | 2022-03-15 | Cooling fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220559783.7U CN218385435U (en) | 2022-03-15 | 2022-03-15 | Cooling fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film |
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| CN218385435U true CN218385435U (en) | 2023-01-24 |
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| CN202220559783.7U Active CN218385435U (en) | 2022-03-15 | 2022-03-15 | Cooling fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114678632A (en) * | 2022-03-15 | 2022-06-28 | 浙江锂盾新能源材料有限公司 | Cooling fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film and battery |
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- 2022-03-15 CN CN202220559783.7U patent/CN218385435U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114678632A (en) * | 2022-03-15 | 2022-06-28 | 浙江锂盾新能源材料有限公司 | Cooling fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film and battery |
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