WO2020147469A1 - 电池包装材料和电池 - Google Patents

电池包装材料和电池 Download PDF

Info

Publication number
WO2020147469A1
WO2020147469A1 PCT/CN2019/124866 CN2019124866W WO2020147469A1 WO 2020147469 A1 WO2020147469 A1 WO 2020147469A1 CN 2019124866 W CN2019124866 W CN 2019124866W WO 2020147469 A1 WO2020147469 A1 WO 2020147469A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
temperature resistant
high temperature
flame
retardant
Prior art date
Application number
PCT/CN2019/124866
Other languages
English (en)
French (fr)
Inventor
卢轮
徐凡
谢封超
Original Assignee
华为技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2020147469A1 publication Critical patent/WO2020147469A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/092—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/095—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/121—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
    • H01M50/126—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure comprising three or more layers
    • H01M50/128—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure comprising three or more layers with two or more layers of only inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
    • H01M50/126—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure comprising three or more layers
    • H01M50/129—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/14—Primary casings, jackets or wrappings of a single cell or a single battery for protecting against damage caused by external factors
    • H01M50/143—Fireproof; Explosion-proof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/24—Organic non-macromolecular coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/28—Multiple coating on one surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/46—Bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/10—Batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • 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

Definitions

  • This application relates to the battery field, and more specifically, to battery packaging materials and batteries in the battery field.
  • the present application provides a battery packaging material and a battery.
  • the battery packaging material has the dual characteristics of high temperature resistance and flame retardancy at the same time, and further has a strong fire protection function.
  • a battery packaging material is provided.
  • the battery packaging material is sequentially provided with a protective layer, a metal layer and an encapsulation layer from the outside to the inside, wherein,
  • a first high temperature resistant layer is provided between the metal layer and the protective layer;
  • a second high temperature resistant layer is provided between the metal layer and the packaging layer;
  • a flame retardant layer is provided above the protective layer, or between the protective layer and the metal layer, or between the metal layer and the encapsulation layer, or under the encapsulation layer.
  • a high temperature resistant layer is provided above the metal layer and below the metal layer.
  • the metal layer will not melt and shrink rapidly due to high temperature under the isolation of the high temperature layer, but maintain The state is stable.
  • the flame-retardant layer fully exerts its flame-retardant effect, it can avoid metal melting caused by a sharp rise in temperature, and further reduce the fireproof pressure of the high-temperature resistant layer. Therefore, the high-temperature-resistant layer and the flame-retardant layer in the embodiments of the present application can work synergistically to improve the high-temperature resistance of the metal layer, thereby enabling the battery packaging material to have a strong fire protection function.
  • the first high temperature resistant layer is disposed on the upper surface of the metal layer, or the first high temperature resistant layer is disposed below the protective layer. surface.
  • the second high temperature resistant layer is disposed on the lower surface of the metal layer, or the second high temperature resistant layer is disposed on the encapsulation layer surface.
  • the upper surface and/or lower surface of the metal layer is coated with a high temperature resistant coating, which can more effectively improve the ability of the metal layer to withstand high temperatures.
  • the first high temperature resistant layer is at least composed of a high temperature resistant material
  • the second high temperature resistant layer is at least composed of a high temperature resistant material.
  • the high temperature resistant material may be a high temperature resistant paint.
  • the high temperature resistant material includes an organic silicon high temperature resistant material or an inorganic silicon high temperature resistant material.
  • the first high temperature resistant layer further includes a flame retardant material
  • the second high temperature resistant layer further includes a flame retardant material
  • the A high temperature resistant layer further includes an adhesive material
  • the second high temperature resistant layer further includes an adhesive material
  • the content of the flame-retardant material in the battery packaging material can be increased, and the flame-retardant effect of the battery packaging material can be further enhanced.
  • the embodiments of the present application can combine the flame-retardant layer and the high-temperature resistant layer into one, so that a layer of material can have the dual characteristics of flame-retardant and high-temperature resistance at the same time, and the thickness of the battery packaging material can be reduced.
  • the high temperature resistant layer can have good bonding performance.
  • a high-temperature resistant material with better bonding properties can be used to replace the adhesive to bond each layer of material to reduce the thickness of the battery packaging material.
  • the flame-retardant layer is provided on the surface of at least one of the protective layer, the metal layer, and the encapsulation layer.
  • the flame-retardant layer can also be provided on or under the first high temperature resistant layer, or on or under the second high temperature resistant layer, which is not limited in the embodiment of the present application.
  • the flame-retardant layer at least consists of a flame-retardant material.
  • the flame retardant material may be a flame retardant coating.
  • the flame-retardant material includes an organic flame-retardant material or an inorganic flame-retardant material
  • the organic flame retardant material includes at least one of the following: organic halogen flame retardant, organic phosphorus flame retardant, isocyanurate flame retardant, melamine-based flame retardant;
  • the inorganic flame retardant includes at least one of the following: magnesium oxide, magnesium hydroxide, aluminum oxide, aluminum hydroxide, ammonium phosphate, and polymeric ammonium phosphate.
  • the flame retardant layer may also include high temperature resistant materials.
  • the flame retardant layer further includes a bonding material.
  • a third high temperature resistant layer is provided on the protective layer. Therefore, the embodiments of the present application can further improve the high temperature resistance of the packaging material on the one hand, and on the other hand can also use the high corrosion resistance, oxidation resistance and wear resistance and impact resistance of the high temperature material to improve the corrosion resistance of the battery packaging material. Grinding performance.
  • the battery packaging material further includes an adhesive layer
  • the adhesive layer is provided between the first high temperature resistant layer and the protective layer, or the adhesive layer is provided between the metal layer and the first high temperature resistant layer, and the adhesive The layer is disposed between the second high temperature resistant layer and the encapsulation layer, or the adhesive layer is disposed between the metal layer and the second high temperature resistant layer.
  • a flame-retardant material is also dispersed in the adhesive layer.
  • flame-retardant materials with better bonding characteristics can be used to replace adhesives to bond each layer of materials, so that no additional adhesives are needed, and the total number of battery packaging materials can be reduced, thereby reducing The thickness of the small battery packaging material.
  • the number of flame-retardant layers can be increased and the flame-retardant effect of the battery packaging material can be enhanced.
  • the high-temperature resistant layer, the flame-retardant layer, and the adhesive layer may be combined into one layer, that is, a layer of materials includes the flame-retardant material, the high-temperature resistant material, and the bonding material at the same time. In this way, the thickness of the battery packaging material can be further reduced.
  • a high-temperature resistant layer or a flame-retardant layer may be provided on the lower surface of the packaging layer to further enhance the flame-retardant or high-temperature resistant properties of the battery packaging material, thereby improving the fireproof performance of the battery packaging material.
  • the battery packaging materials described in the embodiments of this application are used under extreme thermal runaway conditions.
  • a high temperature resistant layer is provided above and below the metal layer, so that the metal layer is isolated from the high temperature resistant layer. It will quickly melt and shrink due to high temperature, but maintain a stable state, so that the flame retardant material will not be far away from the thermal runaway point, and can effectively exert its flame retardant effect.
  • the flame-retardant layer fully exerts its flame-retardant effect, it can effectively prevent thermal runaway, thereby avoiding metal melting caused by a sharp rise in temperature, and reducing the fire pressure of the high-temperature resistant layer.
  • the high-temperature-resistant layer and the flame-retardant layer in the embodiments of the present application can work synergistically, so that the battery packaging material has the dual characteristics of high-temperature resistance and flame-retardant at the same time, and thus has a strong and comprehensive fire protection function.
  • a battery in which at least one of the positive electrode, the negative electrode, and the electrolyte of the battery is contained in a package formed by the battery packaging material described in the first aspect and any possible implementation of the first aspect In the container.
  • a terminal in a third aspect, includes the battery according to the second aspect.
  • Figure 1 shows a schematic diagram of a battery packaging material.
  • Fig. 2 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • Fig. 3 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • Fig. 4 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • FIG. 5 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • FIG. 6 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • FIG. 7 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • FIG. 8 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • FIG. 1 shows a schematic diagram of a battery packaging material.
  • the battery packaging material at least includes a protective layer 1, a metal layer 2 and an encapsulation layer 3.
  • the protective layer 1, the metal layer 2 and the encapsulation layer 3 are sequentially arranged from the outside to the inside.
  • the sealing layers are welded to each other to seal the battery element.
  • the packaging layer is the innermost layer of the battery packaging material
  • the protective layer is the outermost layer of the battery packaging material.
  • the battery packaging material may be formed by heat sealing, or formed by deep drawing forming, which is not limited in the embodiment of the present application.
  • the protective layer is used to protect the metal layer and isolate the air.
  • the protective layer may have a single-layer structure, or may include a multi-layer structure with two or more layers.
  • each layer may be formed of different materials.
  • each layer may be bonded via an adhesive, or may be directly laminated without an adhesive.
  • the material forming the protective layer is insulating.
  • the protective layer material is, for example, polyester, polyamide, epoxy resin, acrylic resin, fluororesin, polyurethane and mixtures thereof.
  • the polyester can be, for example, polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate, polybutylene terephthalate, copolymer Polyester, polycarbonate, etc.
  • the polyamide may be, for example, nylon 6, nylon 66, a copolymer of nylon 6 and nylon 66, nylon 610, polymetaxylylene adipamide (MXD6), and the like.
  • the metal layer can increase the strength of the packaging material and improve the ability of the battery core to resist external forces. In addition, the metal layer can act as a barrier layer to prevent water vapor, oxygen, light, etc. from intruding into the battery.
  • the metal layer material can be aluminum foil or steel foil.
  • the battery packaging material can be called aluminum-plastic composite film (abbreviated as aluminum-plastic film).
  • the metal layer material is steel foil
  • the battery packaging material can be called a steel-plastic composite film (steel-plastic film for short).
  • the thickness of the metal layer is usually about 10 to 200 ⁇ m.
  • the encapsulation layer is used to protect the cells and resist corrosion. Specifically, when the battery is assembled, the encapsulation layers are welded to each other to seal the battery element.
  • the encapsulation layer may have a single-layer structure, or a multilayer structure of two or more layers. When the encapsulation layer has a multilayer structure, each layer may be formed of different materials. In addition, when the encapsulation layer has a multilayer structure, the layers may be bonded via an adhesive, or may be directly laminated without an adhesive.
  • the material forming the encapsulation layer is, for example, polyolefin, acid-modified polyolefin, and a mixture thereof.
  • the polyolefin can be, for example, low-density, medium-density, high-density polyethylene, linear low-density polyethylene, homo-polypropylene, and random or block copolymers of propylene and ethylene or other alpha olefins.
  • the acid-modified polyolefin is obtained by modifying the above-mentioned polyolefin with a carboxylic acid.
  • the carboxylic acid used for modification may be maleic acid, acrylic acid, itaconic acid, crotonic acid, maleic anhydride, and the like, for example.
  • the embodiments of the present application provide a battery packaging material.
  • the battery packaging material uses a protective layer, a metal layer, and an encapsulation layer as main substrates.
  • the high temperature resistant layer and the flame retardant layer are provided in the battery packaging material at the same time.
  • the surface of the substrate is coated with high temperature resistant coatings and flame retardant coatings, so that the battery packaging material has the dual characteristics of high temperature resistance and flame retardancy at the same time, and thus has a strong fire protection function.
  • the protective layer, the metal layer and the encapsulation layer can refer to the description in FIG. 1.
  • the battery packaging material is sequentially provided with a protective layer, a metal layer and an encapsulation layer from the outside to the inside.
  • a first high temperature resistant layer is provided between the metal layer and the protective layer.
  • a second high temperature resistant layer is arranged between the metal layer and the packaging layer.
  • a flame retardant layer is provided above the protective layer, or between the protective layer and the metal layer, or between the metal layer and the encapsulation layer, or under the encapsulation layer.
  • a high temperature resistant layer is provided above the metal layer and below the metal layer.
  • the metal layer will not melt and shrink rapidly due to high temperature under the isolation of the high temperature layer, but maintain The state is stable.
  • the flame-retardant layer fully exerts its flame-retardant effect, it can avoid metal melting caused by a sharp rise in temperature, and further reduce the fireproof pressure of the high-temperature resistant layer.
  • the high-temperature-resistant layer and the flame-retardant layer in the embodiments of the present application can act synergistically to improve the high-temperature resistance and flame-retardant ability of the packaging material as a whole, thereby enabling the battery packaging material to have a strong fire protection function.
  • the high temperature resistant layer is at least composed of high temperature resistant materials.
  • the high temperature resistant material may be a high temperature resistant paint.
  • the high-temperature resistant material can maintain long-term stability at a temperature of about 400-1200°C, which can effectively improve the high temperature tolerance of the battery packaging material (especially the metal layer).
  • the high temperature resistant materials can be selected from various organic high temperature resistant materials or inorganic high temperature resistant materials, including but not limited to various organic silicon high temperature resistant materials and inorganic silicon high temperature resistant materials.
  • the high temperature resistant material can be made of pure methyl phenyl silicone resin, low melting point glass powder, chromium trioxide, porcelain clay, aluminum powder, talc, aluminum stearate, barium metaborate, High temperature resistant coating composed of phthalate ester, silane coupling agent and xylene.
  • the high temperature resistant material may be made of lithium bentonite, modified silicone resin, polyurethane, aluminum silicate fiber, talc, silica sol, mineral oil, dodecyl alcohol ester, propylene glycol phenyl ether , Hydroxymethylcellulose, sodium polycarboxylate, polymethylphenylsiloxane, deionized water composition of high temperature resistant coating.
  • the high temperature resistant material may be a high temperature resistant coating composed of anhydrous ethanol, modified silicon carbide, modified silica sol, aluminum sol, and aluminum dihydrogen phosphate.
  • the high temperature resistant material may be a high temperature resistant paint composed of inorganic silicone resin, titanium dioxide, mica powder, tungsten powder, modified silicon carbide, and dispersant.
  • the high temperature resistant material may be made of polyurethane, boron phenolic resin, polytetrafluoroethylene, nano silica sol, mica iron oxide, ceramic powder, hydroxyethyl cellulose, hydroxyl-terminated fluorinated polyester poly High temperature resistant coating composed of siloxane, dipolyricinoleate, 2-amino-2-methyl-1-propanol, glyceryl monostearate, calcium carbonate, polyamide, DY121 and ethyl acetate.
  • each high temperature resistant material may also include other types of materials, or the high temperature resistant materials may also have other types of materials. Composition.
  • the flame-retardant layer at least consists of flame-retardant materials.
  • the flame retardant material may be a flame retardant coating.
  • flame-retardant materials mainly play an active flame-retardant function.
  • the flame-retardant material may be, for example, a non-expandable organic fire-retardant material or an intumescent organic fire-retardant material.
  • Non-intumescent flame-retardant materials mainly generate flame-retardant gases (such as HCl, HBr, carbon dioxide, ammonia, etc.) by thermal decomposition to inhibit the generation of open flames.
  • Intumescent flame-retardant materials mainly generate flame-retardant gases (such as nitrogen, ammonia, etc.) by thermal decomposition and further promote the foaming of the carbonizing agent to play a flame-retardant effect.
  • the temperature at which the flame-retardant material is thermally decomposed is, for example, about 100°C to 300°C, which is not limited in the embodiments of the present application.
  • the flame retardant material can be selected from various organic flame retardants or inorganic flame retardants.
  • Organic flame retardants include, but are not limited to, organic halogen flame retardants, organic phosphorus flame retardants, isocyanurate flame retardants, and melamine based flame retardants.
  • Inorganic flame retardants include, but are not limited to, magnesium oxide, magnesium hydroxide, aluminum oxide, aluminum hydroxide, ammonium phosphate, and polymeric ammonium phosphate.
  • the flame retardant material may be a flame retardant coating composed of polyvinyl alcohol, magnesium hydroxide, and water.
  • the flame-retardant material may be a flame-retardant coating composed of amino resin, vinyl acetate resin, amidine urea phosphate, melamine, pentaerythritol, BYK310 additive, dimethyl silicone oil, titanium dioxide, and water.
  • the flame-retardant material may be a flame-retardant coating composed of phosphorus-containing waterborne polyurethane resin, titanium dioxide, dimethyl silicone oil, and BYK-154 additives.
  • Fig. 2 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • a high temperature resistant layer 41 is provided between the metal layer 2 and the protective layer 1 (which may correspond to an example of the first high temperature resistant layer above), and a heat resistant layer 41 is provided between the metal layer 2 and the encapsulation layer 3.
  • the high temperature layer 42 (which may correspond to an example of the second high temperature resistant layer above), and a flame retardant layer 51 is provided on the encapsulation layer 3.
  • the high temperature resistant layer 41 may be provided on the upper surface of the metal layer 2. Alternatively, in another implementation manner, the high temperature resistant layer 41 may be provided on the lower surface of the protective layer 1.
  • the upper surface of the metal layer may be coated with a high temperature resistant paint to form the high temperature resistant layer 41, or the lower surface of the protective layer may be coated with a high temperature resistant paint to form the high temperature resistant layer 41.
  • the high temperature resistant layer 42 may be provided on the lower surface of the metal layer 2. Alternatively, in another implementation manner, the high temperature resistant layer 42 may be provided on the upper surface of the encapsulation layer 3.
  • a high-temperature resistant coating may be coated on the lower surface of the metal layer to form a high-temperature resistant layer 42 or a high-temperature resistant coating may be coated on the upper surface of the encapsulation layer to form a high-temperature resistant layer 42.
  • the thickness of the high temperature resistant layer may be about 3 to 100 ⁇ m, preferably about 5 to 20 ⁇ m.
  • the high temperature resistant layer can be realized by manual coating or spraying with automated equipment, which is not limited in the embodiment of the present application.
  • the upper surface and/or lower surface of the metal layer is coated with a high temperature resistant coating, which can more effectively improve the ability of the metal layer to withstand high temperatures.
  • the flame-retardant layer 51 may be provided on the upper surface of the encapsulation layer.
  • a flame-retardant paint may be coated on the upper surface of the encapsulation layer to form a flame-retardant layer.
  • the flame-retardant layer can be realized by manual coating or spraying with automatic equipment, which is not limited in the embodiments of the present application.
  • the thickness of the flame-retardant layer may be about 5 to 100 ⁇ m, preferably about 10-20 ⁇ m.
  • the flame retardant layer may also be provided on the upper or lower surface of the protective layer, or the upper or lower surface of the metal layer, or the lower surface of the encapsulation layer. Not limited.
  • the lower surface (ie, inner surface) of the encapsulation layer will directly contact the electrolyte, in order to prevent various organic materials or inorganic materials in the flame-retardant layer or high temperature resistant layer from reacting with the electrolyte,
  • the lower surface of the encapsulation layer is not provided with a flame-retardant layer or a high-temperature resistant layer, but with the development of technology, materials that do not react with the electrolyte appear, and a flame-retardant layer or a high-temperature resistant layer can also be provided on the lower surface of the encapsulation layer.
  • the flame-retardant layer may also be provided on or under the high temperature resistant layer 41, or on or under the high temperature resistant layer 42, which is not limited in the embodiments of the present application.
  • the flame retardant coating can be coated on the high temperature resistant layer.
  • a high temperature resistant coating is applied on the flame retardant layer.
  • the high temperature resistant layer may also include flame retardant materials.
  • the high temperature resistant layer 41 in FIG. 2 may include a flame retardant material, and/or the high temperature resistant layer 42 may also include a flame retardant material.
  • the content of the flame retardant material in the battery packaging material can be increased, and the flame retardant effect of the battery packaging material can be further enhanced.
  • the high temperature resistant layer may also include a flame retardant material, in other words, the flame retardant layer may also include a high temperature resistant material. That is to say, at this time, the layer material can also be referred to as a high-temperature resistant flame-retardant layer, which is not limited in the embodiment of the present application.
  • FIG. 3 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • a high temperature resistant layer 43 is provided between the metal layer 2 and the protective layer 1 (which may correspond to an example of the first high temperature resistant layer above), and a heat resistant layer 43 is provided between the metal layer 2 and the encapsulation layer 3.
  • the high temperature layer 44 (which may correspond to an example of the above second high temperature resistant layer).
  • the high temperature resistant layer 43 includes a flame retardant material
  • the high temperature resistant layer 44 includes a flame retardant material.
  • the high temperature resistant layer 43 may also be referred to as the high temperature resistant flame retardant layer 43.
  • the high temperature resistant layer 44 may also be referred to as a high temperature resistant flame retardant layer 44.
  • the flame retardant layer and the high temperature resistant layer are combined into one, so that a layer of material can have the dual characteristics of flame retardancy and high temperature resistance at the same time, and the thickness of the battery packaging material can be reduced.
  • the high temperature resistant layer may also include an adhesive material.
  • the high temperature resistant layer can also have good bonding properties.
  • the high temperature resistant layer 41 may include an adhesive material, and/or the high temperature resistant layer 42 may also include an adhesive material.
  • the high-temperature resistant layer can have good bonding performance by including the bonding material in the high-temperature resistant layer.
  • a high-temperature resistant material with better bonding properties can be used to replace the adhesive to bond each layer of material to reduce the thickness of the battery packaging material.
  • a high temperature resistant material with good bonding properties can be, for example, lithium bentonite, modified silicone resin, polyurethane, aluminum silicate fiber, talc, silica sol, mineral oil, dodecyl alcohol ester, propylene glycol
  • a high temperature resistant coating composed of phenyl ether, hydroxymethyl cellulose, sodium polycarboxylate, polymethylphenylsiloxane, deionized water, or others, which is not limited in the embodiments of the present application.
  • the battery packaging material further includes a first adhesive layer, and the first adhesive layer is disposed between the first high temperature resistant layer and the protective layer.
  • a possible implementation is that after the upper surface of the metal layer is coated with a high temperature resistant layer, the protective layer and the metal layer coated with a high temperature resistant coating on the upper surface can be bonded by an adhesive.
  • a possible implementation is to coat the upper surface of the metal layer with a high-temperature resistant layer, and after coating the lower surface of the protective layer with a flame-retardant layer, use an adhesive to coat the lower surface with a protective layer of flame-retardant material and The upper surface is coated with a metal layer of high temperature resistant paint for bonding.
  • the first adhesive layer may be disposed between the metal layer and the first high temperature resistant layer.
  • a possible implementation is that after the lower surface of the protective layer is coated with a high-temperature resistant layer, an adhesive can be used to bond the protective layer coated with a high-temperature resistant coating on the lower surface and the metal layer.
  • a possible implementation is to coat the upper surface of the metal layer with a flame-retardant layer, and after coating the lower surface of the protective layer with a high-temperature resistant layer, use an adhesive to coat the lower surface with a protective layer of high-temperature resistant material and The upper surface is coated with a metal layer of flame retardant material for bonding.
  • the battery packaging material further includes a second adhesive layer, and the second adhesive layer is disposed between the second high temperature resistant layer and the packaging layer.
  • a possible implementation is that after the lower surface of the metal layer is coated with a high-temperature resistant layer, an adhesive is used to bond the encapsulation layer and the metal layer coated with a high-temperature resistant coating on the lower surface.
  • a possible implementation is to coat the lower surface of the metal layer with a high temperature resistant layer, and after the flame retardant layer is coated on the upper surface of the encapsulation layer, the upper surface of the encapsulation layer and the flame retardant material are coated with an adhesive.
  • the lower surface is coated with a metal layer of high temperature resistant paint for bonding.
  • the second adhesive layer may be provided between the metal layer and the second high temperature resistant layer.
  • a possible implementation is that after the upper surface of the encapsulation layer is coated with a high temperature resistant layer, the metal layer and the encapsulation layer coated with a high temperature resistant coating on the upper surface can be bonded by an adhesive.
  • a possible implementation is to coat the lower surface of the metal layer with a flame-retardant layer, and after coating the upper surface of the encapsulation layer with a high-temperature resistant layer, use an adhesive to coat the upper surface of the encapsulation layer with a high-temperature resistant material and The lower surface is coated with a metal layer of flame-retardant material for bonding.
  • FIG. 4 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • the battery packaging material includes a protective layer 1, an adhesive layer 61 (corresponding to an example of the first adhesive layer above), and a high temperature resistant layer 41 (corresponding to the upper An example of the first high temperature resistant layer in the text), the metal layer 2, the high temperature resistant layer 42 (which may correspond to an example of the second high temperature resistant layer above), and the adhesive layer 62 (which may correspond to the second high temperature resistant layer above) An example of an adhesive layer), a flame-retardant layer 51 and an encapsulation layer 3.
  • FIG. 4 An example of manufacturing the battery packaging material shown in FIG. 4 is shown below. First, coat the upper and lower surfaces of the metal layer 2 with a high-temperature resistant coating to form a high-temperature resistant layer 41 and a high-temperature resistant layer 42; then coat the upper surface of the encapsulation layer 3 with a flame-retardant coating to form a flame-retardant layer 51; Then use an adhesive to bond the protective layer, the metal layer coated with high temperature resistant coating on the upper and lower surfaces, and the encapsulation layer coated with flame retardant coating on the upper surface; finally, the materials of each layer can be combined by pressing or heat sealing , Get the finished battery packaging material.
  • FIG. 5 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • the battery packaging material includes a protective layer 1, a high temperature resistant layer 47 (which may correspond to an example of the first high temperature resistant layer above), and an adhesive layer 63 (which may correspond to the upper An example of the first adhesive layer in the text), the metal layer 2, the flame-retardant layer 53, the adhesive layer 64 (which may correspond to an example of the second adhesive layer above), the high temperature resistant layer 48 (which may correspond to An example of the second high temperature resistant layer above) and the encapsulation layer 3.
  • the battery packaging material includes a protective layer 1, a high temperature resistant layer 47 (which may correspond to an example of the first high temperature resistant layer above), and an adhesive layer 63 (which may correspond to the upper An example of the first adhesive layer in the text), the metal layer 2, the flame-retardant layer 53, the adhesive layer 64 (which may correspond to an example of the second adhesive layer above), the high temperature resistant layer 48 (which may correspond to An example of the second high temperature resistant
  • FIG. 5 An example of making the battery packaging material shown in FIG. 5 is shown below. First, coat high temperature resistant paint on the lower surface of the protective layer to form a high temperature resistant layer 47, coat high temperature resistant paint on the upper surface of the encapsulation layer to form a high temperature resistant layer 48, and coat the lower surface of the metal layer 2 with resistance resistant paint. Combustible paint to form a flame-retardant layer 53; then use an adhesive to bond the lower surface with a protective layer of high-temperature resistant material, the metal layer with flame-retardant paint on the lower surface, and the encapsulation layer with high-temperature paint on the upper surface. ; Finally, the materials of each layer can be combined by pressing or heat sealing to obtain the finished battery packaging material.
  • the adhesive layer is used to bond the protective layer and the metal layer, or to bond the metal layer and the encapsulation layer.
  • the adhesive layer is formed by an adhesive that can bond the protective layer and the metal layer, or can bond the metal layer and the encapsulation layer.
  • the adhesive used to form the adhesive layer may be a two-component curing type adhesive or a one-component curing type adhesive.
  • the bonding mechanism of the adhesive here may be one of a chemical reaction type, a solvent volatilization type, a hot melt type, and a hot pressing type, which is not limited in the embodiments of the present application.
  • the material forming the adhesive layer is, for example, polyester, polyethyleneimine, polyether, cyanoacrylate, urethane, organic titanium, polyether urethane, and epoxy resin. , Polyurethane-based, imide-based, isocyanate-based, polyolefin-based, and silicone-based adhesives.
  • the thickness of the adhesive layer may be about 2 to 50 ⁇ m, preferably about 3 to 25 ⁇ m.
  • the flame-retardant layer may further include a bonding material. That is to say, in the embodiments of the present application, the flame-retardant layer can also have good bonding performance. In other words, flame retardant materials are also dispersed in the adhesive layer in the examples of this application.
  • flame-retardant materials with better bonding characteristics can be used to replace adhesives to bond each layer of materials, so that no additional adhesives are needed, and the total number of battery packaging materials can be reduced, thereby reducing The thickness of the small battery packaging material.
  • the adhesive with a flame-retardant material with better bonding properties to bond each layer, the number of flame-retardant layers can be increased and the flame-retardant effect of the battery packaging material can be enhanced.
  • a flame-retardant material with good bonding performance may be a flame-retardant coating composed of phosphorus-containing waterborne polyurethane resin, titanium dioxide, dimethyl silicone oil, BYK-154 additives, or other, the embodiments of this application are This is not limited.
  • FIG. 6 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • the battery packaging material includes a protective layer 1, a flame-retardant layer 54, a high temperature resistant layer 49 (corresponding to an example of the first high temperature resistant layer above), a metal layer 2, a resistant layer, from the outside to the inside.
  • the high temperature layer 410 (corresponding to an example of the second high layer resistant), the flame retardant layer 55 and the encapsulation layer 3.
  • the flame-retardant layer 54 and the flame-retardant layer 55 have better bonding properties.
  • the flame-retardant layer 54 is also referred to as the adhesive layer 54
  • the flame-retardant layer 55 may also be referred to as the adhesive layer 55, which is not limited in the embodiment of the present application.
  • the battery packaging material is shown below. First, coat the upper and lower surfaces of the metal layer 2 with high-temperature resistant coatings to form a high-temperature resistant layer 49 and a high-temperature resistant layer 410; then use an adhesive to coat the protective layer, upper and lower surfaces with high-temperature resistant coatings. The metal layer and the encapsulation layer are bonded, where a flame retardant is dispersed in the adhesive; finally, the materials of each layer can be combined by pressing or heat sealing to obtain a finished battery packaging material.
  • the high-temperature resistant layer, the flame-retardant layer, and the adhesive layer may be combined into one layer, that is, a layer of materials includes the flame-retardant material, the high-temperature resistant material, and the bonding material at the same time. In this way, the thickness of the battery packaging material can be further reduced.
  • FIG. 7 shows a schematic diagram of a battery packaging material provided by an embodiment of the present application.
  • the battery packaging material includes a protective layer 1, a composite layer 411, a metal layer 2, a composite layer 412, and an encapsulation layer 3 from the outside to the inside in sequence.
  • the composite layer 411 may be a composite of a high temperature resistant material and a bonding material, or a composite of a high temperature resistant material, a flame retardant material, and a bonding material.
  • the composite layer 412 may be a composite of a high temperature resistant material and a bonding material, or a composite of a high temperature resistant material, a flame retardant material, and a bonding material.
  • at least one layer of the composite layer 411 and the composite layer 412 contains a flame-retardant material.
  • the composite layer is also called another name, which is not limited in the embodiment of the present application.
  • a third high temperature resistant layer is provided on the protective layer.
  • FIG. 8 shows an example of the battery packaging material of the present application.
  • the battery packaging material is sequentially provided with: a high temperature resistant layer 415 (corresponding to an example of the third high temperature resistant layer above), a protective layer 1.
  • High temperature resistant layer 413 (corresponding to the above first high temperature resistant layer), metal layer 2, high temperature resistant layer 414 (corresponding to an example of the above second high temperature resistant layer), flame retardant layer 56 and encapsulation layer 3.
  • the high temperature resistant layer 415 is provided on the upper surface of the protective layer.
  • a flame-retardant layer or other layer structure may be further provided on the high temperature resistant layer 415, which is not limited in the embodiment of the present application.
  • the high temperature resistant layer 415 may be provided on the outermost layer of the battery packaging material.
  • the flame-retardant layer or other layer structure may also be provided between the high temperature resistant layer 415 and the protective layer, which is not limited in the embodiment of the present application.
  • the embodiments of the present application can further improve the high temperature resistance of packaging materials on the one hand, and on the other hand, can also use the high anticorrosion, oxidation resistance, and wear resistance and impact characteristics of high temperature resistant materials to improve the performance of battery packaging materials. Anti-corrosion and wear resistance.
  • a high-temperature resistant layer or a flame-retardant layer can also be provided on the lower surface of the packaging layer to further enhance the flame-retardant or high-temperature resistant properties of the battery packaging material, thereby improving the fire protection of the battery packaging material. performance.
  • the thermal decomposition temperature produces a small amount of flame-retardant gas, and the flame-retardant coatings in most areas around the acupuncture point are far from reaching its thermal decomposition temperature, so they remain intact and do not have flame retardant effects.
  • a small amount of flame-retardant gas cannot effectively prevent thermal runaway, and the temperature of the acupuncture point area continues to rise rapidly, reaching the melting temperature of the aluminum foil layer.
  • the aluminum foil at the acupuncture point is heated to melt and shrink, causing the flame-retardant coating around the acupuncture point to be further away from the thermal runaway point, and its flame retardant effect cannot be effectively exerted.
  • the thermal runaway in the acupuncture point area cannot be effectively prevented. Therefore, in this case, a safety accident is likely to occur.
  • a high temperature resistant layer is provided above and below the metal layer, so that the metal layer is isolated by the high temperature resistant layer. It will not melt and shrink rapidly due to high temperature, but maintain a stable state, so that the flame-retardant material will not be taken away from the thermal runaway point due to the melting and shrinkage of the metal.
  • the flame-retardant layer can effectively exert its flame retardant effect.
  • the flame-retardant layer fully exerts its flame-retardant effect, it can effectively prevent thermal runaway, thereby avoiding metal melting caused by a sharp rise in temperature, and reducing the fire pressure of the high-temperature resistant layer.
  • the high-temperature-resistant layer and the flame-retardant layer in the embodiments of the present application can work synergistically, so that the battery packaging material has the dual characteristics of high-temperature resistance and flame-retardant at the same time, and thus has a strong and comprehensive fire protection function.
  • the embodiments of the present application also provide a battery in which at least one of the positive electrode, the negative electrode and the electrolyte of the battery is contained in a packaging container formed by the battery packaging materials described in the foregoing embodiments.
  • An embodiment of the present application also provides a terminal, which includes the aforementioned battery.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)

Abstract

一种电池包装材料，该电池包装材料同时具备耐高温和阻燃的双重防火特性，进而具备强效的防火功能。该电池包装材料由外到内依次设置有防护层（1）、金属层（2）和封装层（3），其中，金属层（2）和防护层（1）之间设置有第一耐高温层（41）；金属层（2）和封装层（3）之间设置有第二耐高温层（42）；所述防护层（1）之上，或者所述防护层（1）与所述金属层（2）之间，或者，所述金属层（2）与所述封装层（3）之间，或者所述封装层（3）之下设置有阻燃层（51）。

Description

电池包装材料和电池
本申请要求在2019年1月15日提交中国国家知识产权局、申请号为201910035015.4、发明名称为“电池包装材料和电池”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池领域，并且更具体的，涉及电池领域中的电池包装材料和电池。
背景技术
随着电动汽车技术的快速发展，锂离子电池的需求将迎来又一次爆发式增长。电动汽车中锂离子电池的安全问题也将更加凸显。电池一旦出现热时刻，发生起火燃烧事故，后果将不堪设想。可见，锂离子电池的防火功能是保证其长期安全使用的一项不可或缺的重要功能。作为电池防火的最后一道防线，电池包装材料的防火能力亟待优化。
发明内容
本申请提供一种电池包装材料和电池，该电池包装材料同时具备耐高温和阻燃的双重特性，进而具备强效的防火功能。
第一方面，提供了一种电池包装材料，该电池包装材料由外到内依次设置有防护层，金属层和封装层，其中，
所述金属层和所述防护层之间设置有第一耐高温层；
所述金属层和所述封装层之间设置有第二耐高温层；
所述防护层之上，或者所述防护层与所述金属层之间，或者，所述金属层与所述封装层之间，或者所述封装层之下设置有阻燃层。
因此，本申请实施例通过在金属层之上和金属层之下分别设置有耐高温层，一方面，金属层在耐高温层的隔离下，不会因为受到高温而迅速熔化收缩，而是保持状态稳定。另一方面，当阻燃层充分发挥其阻燃作用时，能够避免温度急剧上升所引起的金属熔化，进一步减轻耐高温层的防火压力。因此，本申请实施例中耐高温层和阻燃层能够协同作用，提高金属层的耐高温能力，进而使得电池包装材料具备强效的防火功能。
结合第一方面，在第一方面的一些可能的实现方式中，所述第一耐高温层设置于所述金属层的上表面，或者所述第一耐高温层设置于所述防护层的下表面。
结合第一方面，在第一方面的一些可能的实现方式中，所述第二耐高温层设置于所述金属层的下表面，或者所述第二耐高温层设置于所述封装层的上表面。
本申请实施例在金属层的上表面和/或下表面涂覆耐高温涂层，能够更加有效的提高金属层耐受高温的能力。
结合第一方面，在第一方面的一些可能的实现方式中，所述第一耐高温层至少由耐高温材料组成，所述第二耐高温层至少由耐高温材料组成。作为举例，该耐高温材料可以为耐高温涂料。
结合第一方面，在第一方面的一些可能的实现方式中，所述耐高温材料包括有机硅耐高温材料或无机硅耐高温材料。
结合第一方面，在第一方面的一些可能的实现方式中，所述第一耐高温层中还包括阻燃材料，或者所述第二耐高温层中还包括阻燃材料，或者所述第一耐高温层中还包括粘接材料，或者所述第二耐高温层中还包括粘接材料。
本申请实施例通过将阻燃材料分散在耐高温层中使用，可以增加电池包装材料中的阻燃材料的含量，进一步增强电池包装材料的阻燃效果。
本申请实施例可以将阻燃层和耐高温层合二为一，使得一层材料可以同时具备阻燃和耐高温的双重特性，能够减小电池包装材料的厚度。
本申请实施例通过在耐高温层中包含粘结材料，能够使得耐高温层具有良好的粘结性能。一方面，可以利用具有较好粘结特性的耐高温材料取代粘结剂，对各层材料进行粘结，减小电池包装材料的厚度。
结合第一方面，在第一方面的一些可能的实现方式中，所述阻燃层设置于所述防护层、所述金属层和所述封装层中的至少一层的表面。
可选的，阻燃层也可以设置于第一耐高温层的上面或下面，或者设置于第二耐高温层的上面或下面，本申请实施例对此不作限定。
结合第一方面，在第一方面的一些可能的实现方式中，所述阻燃层至少由阻燃材料组成。作为举例，该阻燃材料可以为阻燃涂料。
结合第一方面，在第一方面的一些可能的实现方式中，所述阻燃材料包括有机阻燃材料或无机阻燃材料；
其中，所述有机阻燃材料包括以下至少一种：有机卤素阻燃剂、有机磷阻燃剂、异氰尿酸酯阻燃剂、蜜胺基阻燃剂；
所述无机阻燃剂包括以下至少一种：氧化镁、氢氧化镁、氧化铝、氢氧化铝、磷酸铵、聚合磷酸铵。
可选的，阻燃层中也可以包括耐高温材料。可选的，所述阻燃层中还包括粘结材料。
结合第一方面，在第一方面的一些可能的实现方式中，所述防护层之上设置有第三耐高温层。因此，本申请实施例一方面能够进一步提高包装材料的耐高温性能，另一方面还可以利用耐高温材料的高防腐性能、抗氧化性能和耐磨抗冲击的特性来提高电池包装材料的防腐耐磨性能。
结合第一方面，在第一方面的一些可能的实现方式中，电池包装材料还包括粘接层，
所述粘接层设置于所述第一耐高温层和所述防护层之间，或者，所述粘结层设置于所述金属层和所述第一耐高温层之间，所述粘接层设置于所述第二耐高温层和所述封装层之间，或者，所述粘接层设置于所述金属层和所述第二耐高温层之间。
可选的，本申请实施例中粘结层中还分散有阻燃材料。这样，一方面可以利用具有较好粘结特性的阻燃材料取代粘接剂，对各层材料进行粘结，从而无需使用额外的粘接剂，能够减少电池包装材料的总层数，进而减小电池包装材料的厚度。另一方面，通过将具有较好粘结特性的阻燃材料取代粘接剂对各层进行粘结，能够增加阻燃层的层数，增强电池包装材料的阻燃效果。
可选的，本申请实施例中，耐高温层、阻燃层和粘接层可以合为一层，即一层材料中 同时包括阻燃材料、耐高温材料和粘结材料。这样，能够进一步地减小电池包装材料的厚度。
可选的，可以在封装层的下表面设置耐高温层，或者阻燃层，以进一步增强电池包装材料的阻燃特性，或者耐高温特性，进而提高电池包装材料的防火性能。
在极端热失控工况下使用本申请实施例所述的电池包装材料，一方面，金属层之上和金属层之下分别设置有耐高温层，使得金属层在耐高温层的隔离下，不会因为受到高温而迅速熔化收缩，而是保持状态稳定，进而使得阻燃材料不会远离热失控点，能够有效发挥其阻燃功效。另一方面，当阻燃层充分发挥其阻燃作用时，能够有效阻止热失控，进而避免温度急剧上升所引起的金属熔化，减轻耐高温层的防火压力。因此，本申请实施例中耐高温层和阻燃层能够协同作用，使得电池包装材料同时具备耐高温和阻燃的双重特性，进而具有强效且全面的防火功能。
第二方面，提供了一种电池，所述电池的正极、负极以及电解质中的至少一种容纳在第一方面以及第一方面的任一可能的实现方式中所述的电池包装材料形成的包装容器中。
第三方面，提供了一种终端，该终端包括上述第二方面所述的电池。
附图说明
图1示出了一种电池包装材料的示意图。
图2示出了本申请实施例提供的一种电池包装材料的示意图。
图3示出了本申请实施例提供的一种电池包装材料的示意图。
图4示出了本申请实施例提供的一种电池包装材料的示意图。
图5示出了本申请实施例提供的一种电池包装材料的示意图。
图6示出了本申请实施例提供的一种电池包装材料的示意图。
图7示出了本申请实施例提供的一种电池包装材料的示意图。
图8示出了本申请实施例提供的一种电池包装材料的示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
图1示出了一种电池包装材料的示意图。该电池包装材料至少包括防护层1、金属层2和封装层3。其中防护层1、金属层2和封装层3由外至内依次设置。在组装电池时，封装层相互熔接而使电池元件密封。也就是说，封装层为电池包装材料的最内层，防护层为电池包装材料的最外层。本申请实施例中，该电池包装材料例如可以通过热密封形成，或者通过深冲压成型形成，本申请实施例对此不作限定。
该防护层用于保护金属层并隔绝空气。具体的，防护层可以为单层结构，也可以包括2层或者2层以上的多层结构。当防护层为多层结构时，各层可以由不同的材料形成。另外，在防护层为多层的情况下，各层可以经由粘接剂粘接，也可以不通过粘接剂而直接层叠。
形成防护层的材料具有绝缘性。防护层材料例如为：聚酯、聚酰胺、环氧树脂、丙烯酸树脂、氟树脂、聚氨酯以及其混合物。作为举例而非限定，聚酯例如可以为聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚荼二甲酸乙二醇酯、聚荼二甲酸丁二醇酯、共聚 聚酯、聚碳酸酯等等。作为举例而非限定，聚酰胺例如可以为尼龙6、尼龙66、尼龙6和尼龙66的共聚物、尼龙610、聚己二酰间苯二甲胺(MXD6)等等。
该金属层能够提高包装材料的强度，提高电芯抵抗外力作用的能力。另外，金属层能够作为阻挡层，阻隔水蒸气、氧、光等侵入电池的内部。金属层材料可以为铝箔或钢箔。当金属层材料为铝箔时，该电池包装材料可以称为铝塑复合膜(简称铝塑膜)。当金属层材料为钢箔时，该电池包装材料可以称为钢塑复合膜(简称钢塑膜)。金属层的厚度通常为10至200μm左右。
该封装层用于保护电芯，抵抗腐蚀。具体的，在组装电池时，封装层相互熔接而使电池元件密封。封装层可以为单层结构，也可以包括2层或者2层以上的多层结构。当封装层为多层结构时，各层可以由不同的材料形成。另外，在封装层为多层结构的情况下，各层可以经由粘接剂粘接，也可以不通过粘接剂而直接层叠。
形成封装层的材料例如为聚烯烃、酸改性聚烯烃及其混合物等。作为举例而非限定，聚烯烃例如可以为低密度、中密度、高密度的聚乙烯、线性低密度聚乙烯、均聚丙烯、以及丙烯与乙烯或其他α烯烃的无规或嵌段共聚物等。酸改性聚烯烃是通过羧酸改性上述聚烯烃而得到的物质。用于改性的羧酸，例如可以为马来酸、丙烯酸、衣康酸、巴豆酸、马来酸酐等。
本申请实施例提供一种电池包装材料，该电池包装材料以防护层、金属层和封装层作为主要基材，通过在电池包装材料中同时设置耐高温层和阻燃层，比如在全部或部分基材表面涂覆耐高温涂料和阻燃涂料，使得该电池包装材料同时具备耐高温和阻燃的双重特性，进而具备强效的防火功能。其中，防护层、金属层和封装层可以参见图1中的描述。
本申请实施例中，电池包装材料由外到内依次设置有防护层，金属层和封装层。其中，所述金属层和所述防护层之间设置有第一耐高温层。所述金属层和所述封装层之间设置有第二耐高温层。所述防护层之上，或者所述防护层与所述金属层之间，或者，所述金属层与所述封装层之间，或者所述封装层之下设置有阻燃层。
因此，本申请实施例通过在金属层之上和金属层之下分别设置有耐高温层，一方面，金属层在耐高温层的隔离下，不会因为受到高温而迅速熔化收缩，而是保持状态稳定。另一方面，当阻燃层充分发挥其阻燃作用时，能够避免温度急剧上升所引起的金属熔化，进一步减轻耐高温层的防火压力。因此，本申请实施例中耐高温层和阻燃层能够协同作用，提高包装材料整体的耐高温能力和阻燃能力，进而使得电池包装材料具备强效的防火功能。
可选的，本申请实施例中，耐高温层至少由耐高温材料组成。作为举例，该耐高温材料可以为耐高温涂料。
具体而言，耐高温材料能够在400-1200℃左右的温度下长期保持稳定，可以有效提高电池包装材料(尤其是金属层)对高温的耐受能力。其中，耐高温材料可以选用各种有机的耐高温材料，或无机的耐高温材料，包括但不限于各种有机硅耐高温材料和无机硅耐高温材料。
一种可能的实现方式，所述耐高温材料可以为由纯甲基苯基硅树脂、低熔点玻璃粉、三氧化二铬、瓷土、铝粉、滑石粉、硬脂酸铝、偏硼酸钡、酞酸酯、硅烷偶联剂、二甲苯组成的耐高温涂料。
一种可能的实现方式，所述耐高温材料可以为由锂基膨润土、改性有机硅树脂、聚氨酯、硅酸铝纤维、滑石粉、硅溶胶、矿物油、十二碳醇酯、丙二醇苯醚、羟甲基纤维素、聚羧酸钠、聚甲基苯基硅氧烷、去离子水组成的耐高温涂料。
一种可能的实现方式，所述耐高温材料可以为由无水乙醇、改性碳化硅、改性硅溶胶、铝溶胶、磷酸二氢铝组成的耐高温涂料。
一种可能的实现方式，所述耐高温材料可以为由无机硅树脂、二氧化钛、云母粉、钨粉、改性碳化硅、分散剂组成的耐高温涂料。
一种可能的实现方式，所述耐高温材料可以为由聚氨酯、硼酚醛树脂、聚四氟乙烯、纳米硅溶胶、云母氧化铁、陶瓷微粉、羟乙基纤维素、端羟基含氟聚酯聚硅氧烷、二聚蓖麻油酸酯、2-氨基-2-甲基-1-丙醇、单硬脂酸甘油脂、碳酸钙、聚酰胺、DY121、乙酸乙酯组成的耐高温涂料。
需要说明的是，上文所示的耐高温材料仅作为示例，本申请实施例并不限于此，例如各耐高温材料的成分中还可以包括其他类型的材料，或者耐高温材料还可以具有其他组成成分。
可选的，本申请实施例中，阻燃层至少由阻燃材料组成。作为举例，该阻燃材料可以为阻燃涂料。
具体而言，阻燃材料主要起到主动阻燃功能。阻燃材料例如可以为非膨胀型有机防火材料，或膨胀型有机防火材料。非膨胀型阻燃材料主要通过受热分解产生阻燃气体(比如HCl、HBr、二氧化碳、氨气等)来抑制明火产生。膨胀型阻燃材料主要通过受热分解产生阻燃气体(比如氮气、氨气等)并进一步促使碳化剂发泡而起到阻燃作用。阻燃材料受热分解的温度例如为100℃至300℃左右，本申请实施例对此不做限定。
其中，阻燃材料可以选用各种有机阻燃剂或无机阻燃剂。有机阻燃剂包括但不限于有机卤素阻燃剂、有机磷阻燃剂、异氰尿酸酯阻燃剂、蜜胺基阻燃剂。无机阻燃剂包括但不限于氧化镁、氢氧化镁、氧化铝、氢氧化铝、磷酸铵、聚合磷酸铵。
一种可能的实现方式，所述阻燃材料可以为由聚乙烯醇、氢氧化镁、水组成的阻燃涂料。
一种可能的实现方式，所述阻燃材料可以为由氨基树脂、醋酸乙烯树脂、磷酸脒基脲、三聚氰胺、季戊四醇、BYK310助剂、二甲基硅油、钛白粉、水组成的阻燃涂料。
一种可能的实现方式，所述阻燃材料可以为由含磷水性聚氨酯树脂、钛白粉、二甲基硅油、BYK-154助剂组成的阻燃涂料。
图2示出了本申请实施例提供的一种电池包装材料的示意图。如图2所示，金属层2和防护层1之间设置有耐高温层41(可以对应于上文中的第一耐高温层的一个示例)，金属层2和封装层3之间设置有耐高温层42(可以对应于上文中的第二耐高温层的一个示例)，封装层3之上设置有阻燃层51。
一种实现方式，耐高温层41可以设置于金属层2的上表面。或者，另一种实现方式，耐高温层41可以设置于防护层1的下表面。
具体的，可以在金属层的上表面涂覆耐高温涂料，形成耐高温层41，或者在防护层的下表面涂覆耐高温涂料，形成耐高温层41。
一种实现方式，耐高温层42可以设置于所述金属层2的下表面。或者，另一种实现 方式，耐高温层42可以设置于封装层3的上表面。
具体的，可以在金属层的下表面涂覆耐高温涂料，形成耐高温层42，或者在封装层的上表面涂覆耐高温涂料，形成耐高温层42。
本申请实施例中，耐高温层厚度可以为3至100μm左右，优选的可以为5至20μm左右。另外，耐高温层可以通过手工涂覆实现，也可以通过自动化设备喷涂实现，本申请实施例对此不作限定。
本申请实施例在金属层的上表面和/或下表面涂覆耐高温涂层，能够更加有效的提高金属层耐受高温的能力。
本申请一个可选的实施例，如图2所示，阻燃层51可以设置于所述封装层的上表面。
具体的，可以在封装层的上表面涂覆阻燃涂料，形成阻燃层。阻燃层可以通过手工涂覆实现，也可以通过自动化设备喷涂实现，本申请实施例对此不作限定。其中，阻燃层的厚度可以为5至100μm左右，优选地可以为10-20μm左右。
在本申请一些可选的实施例中，阻燃层也可以设置于防护层的上表面或下表面，或者金属层的上表面或下表面，或者封装层的下表面，本申请实施例对此不作限定。
需要说明的是，考虑到封装层的下表面(即内表面)会与电解液直接接触，为了防止阻燃层或者耐高温层中的各种有机材料，或无机材料与电解液发生反应，在封装层的下表面不设置阻燃层或耐高温层，但是随着技术发展，出现与电解液不发生反应的材料，也可以在封装层的下表面设置阻燃层或者耐高温层。
或者，在本申请一些可选的实施例中，阻燃层也可以设置于耐高温层41的上面或下面，或者设置于耐高温层42的上面或下面，本申请实施例对此不作限定。例如，可以在涂覆耐高温涂料之后，在耐高温层之上涂覆阻燃涂料。或者，在涂覆阻燃涂料之后，在阻燃层之上涂覆耐高温涂层。
可选的，耐高温层中还可以包括阻燃材料。
作为一个示例，图2中耐高温层41中可以包括阻燃材料，和/或耐高温层42中还可以包括阻燃材料。
这样，本申请实施例通过将阻燃材料分散在耐高温层中使用，可以增加电池包装材料中的阻燃材料的含量，进一步增强电池包装材料的阻燃效果。
应理解，本申请实施例中，耐高温层中还可以包括阻燃材料，换句话说，即阻燃层中也可以包括耐高温材料。也就是说，此时还可以将该层材料称为耐高温阻燃层，本申请实施例对此不作限定。
作为一个示例，图3示出了本申请实施例提供的一种电池包装材料的示意图。如图3所示，金属层2和防护层1之间设置有耐高温层43(可以对应于上文中的第一耐高温层的一个示例)，金属层2和封装层3之间设置有耐高温层44(可以对应于上文中的第二耐高温层的一个示例)。其中，耐高温层43中包括阻燃材料，和/或耐高温层44中包括阻燃材料。此时，当耐高温层43中包括阻燃材料时，耐高温层43也可以称为耐高温阻燃层43。当耐高温层44中包括阻燃材料时，耐高温层44也可以称为耐高温阻燃层44。
本申请实施例通过将阻燃层和耐高温层合二为一，使得一层材料可以同时具备阻燃和耐高温的双重特性，能够减小电池包装材料的厚度。
可选的，耐高温层中还可以包括粘接材料。也就是说，耐高温层也可以具有良好的粘 结性能。作为一个示例，耐高温层41中可以包括粘结材料，和/或耐高温层42中还可以包括粘接材料。
这样，本申请实施例通过在耐高温层中包含粘结材料，能够使得耐高温层具有良好的粘结性能。一方面，可以利用具有较好粘结特性的耐高温材料取代粘结剂，对各层材料进行粘结，减小电池包装材料的厚度。
作为举例，具有良好的粘结性能的耐高温材料例如可以为由锂基膨润土、改性有机硅树脂、聚氨酯、硅酸铝纤维、滑石粉、硅溶胶、矿物油、十二碳醇酯、丙二醇苯醚、羟甲基纤维素、聚羧酸钠、聚甲基苯基硅氧烷、去离子水组成的耐高温涂料，或者其他，本申请实施例对此不作限定。
可选的，本申请实施例中，电池包装材料还包括第一粘接层，所述第一粘接层设置于所述第一耐高温层和所述防护层之间。
一种可能的实现方式，可以在金属层的上表面涂覆耐高温层之后，使用粘接剂将防护层和上表面涂覆耐高温涂料的金属层进行粘结。
一种可能的实现方式，可以在金属层的上表面涂覆耐高温层，在防护层的下表面涂覆阻燃层之后，使用粘接剂将下表面涂覆有阻燃材料的防护层和上表面涂覆耐高温涂料的金属层进行粘结。
或者，第一粘接层可以设置于金属层和第一耐高温层之间。
一种可能的实现方式，可以在防护层的下表面涂覆耐高温层之后，使用粘接剂将下表面涂覆耐高温涂料的防护层和金属层进行粘结。
一种可能的实现方式，可以在金属层的上表面涂覆阻燃层，在防护层的下表面涂覆耐高温层之后，使用粘接剂将下表面涂覆有耐高温材料的防护层和上表面涂覆阻燃材料的金属层进行粘结。
可选的，本申请实施例中，所述电池包装材料还包括第二粘接层，所述第二粘接层设置于所述第二耐高温层和所述封装层之间。
一种可能的实现方式，可以在金属层的下表面涂覆耐高温层之后，使用粘接剂将封装层和下表面涂覆耐高温涂料的金属层进行粘结。
一种可能的实现方式，可以在金属层的下表面涂覆耐高温层，在封装层的上表面涂覆阻燃层之后，使用粘接剂将上表面涂覆有阻燃材料的封装层和下表面涂覆耐高温涂料的金属层进行粘结。
或者，第二粘接层可以设置于金属层和第二耐高温层之间。
一种可能的实现方式，可以在封装层的上表面涂覆耐高温层之后，使用粘接剂将金属层和上表面涂覆耐高温涂料的封装层进行粘结。
一种可能的实现方式，可以在金属层的下表面涂覆阻燃层，在封装层的上表面涂覆耐高温层之后，使用粘接剂将上表面涂覆有耐高温材料的封装层和下表面涂覆阻燃材料的金属层进行粘结。
作为一个示例，图4示出了本申请实施例提供的一种电池包装材料的示意图。如图4所示，该电池包装材料由外至内依次包括防护层1、粘接层61(可对应于上文中的第一粘接层的一个示例)、耐高温层41(可对应于上文中的第一耐高温层的一个示例)、金属层2、耐高温层42(可对应于上文中的第二耐高温层的一个示例)、粘接层62(可对应 于上文中的第二粘接层的一个示例)、阻燃层51和封装层3。
以下示出了制作图4中所示的电池包装材料的一个示例。首先，在金属层2的上表面和下表面分别涂覆耐高温涂料，形成耐高温层41和耐高温层42；然后在封装层3的上表面涂覆阻燃涂料，形成阻燃层51；然后使用粘接剂将防护层、上表面和下表面涂覆耐高温涂料的金属层、上表面涂覆阻燃涂料的封装层进行粘结；最后可以通过压合或热合将各层材料进行复合，得到成品的电池包装材料。
作为一个示例，图5示出了本申请实施例提供的一种电池包装材料的示意图。如图5所示，该电池包装材料由外至内依次包括防护层1、耐高温层47(可对应于上文中的第一耐高温层的一个示例)、粘接层63(可对应于上文中的第一粘接层的一个示例)、金属层2、阻燃层53、粘接层64(可对应于上文中的第二粘接层的一个示例)、耐高温层48(可对应于上文中的第二耐高温层的一个示例)和封装层3。
以下示出了制作图5中所示的电池包装材料的一个示例。首先，在防护层的下表面涂覆耐高温涂料，形成耐高温层47，在封装层的上表面涂覆耐高温涂料，形成耐高温层48，在金属层2的下表面分别涂覆耐阻燃涂料，形成阻燃层53；然后使用粘接剂将下表面涂覆耐高温材料的防护层、下表面涂覆阻燃涂料的金属层、上表面涂覆耐高温涂料的封装层进行粘结；最后可以通过压合或热合将各层材料进行复合，得到成品的电池包装材料。
本申请实施例中，粘接层是为了粘结防护层和金属层，或者为了粘结金属层和封装层。粘接层为能够粘结防护层和金属层，或者能够粘结金属层和封装层的粘接剂而形成。用于形成粘接层的粘接剂可以是双液固化型粘接剂，也可以是单液固化型粘接剂。此外，这里粘接剂的粘结机制可以是化学反应型、溶剂挥发型或者热熔融型、热压型中的一种，本申请实施例对此不作限定。
形成粘接层的材料例如为聚酯系、聚乙烯亚胺系、聚醚系、氰基丙烯酸酯系、氨基甲酸酯系、有机钛系、聚醚氨基甲酸酯系、环氧树脂系、聚酯聚氨酯系、酰亚胺系、异氰酸酯系、聚烯烃系、有机硅系的各种粘接剂。
可选的，粘接层的厚度可以为2至50μm左右，优选为3至25μm左右。
可选的，本申请实施例中，所述阻燃层中还可以包括粘结材料。也就是说，本申请实施例中，阻燃层同时也可以具有良好的粘结性能。换句话说，本申请实施例中粘结层中还分散有阻燃材料。
这样，一方面可以利用具有较好粘结特性的阻燃材料取代粘接剂，对各层材料进行粘结，从而无需使用额外的粘接剂，能够减少电池包装材料的总层数，进而减小电池包装材料的厚度。另一方面，通过将具有较好粘结特性的阻燃材料取代粘接剂对各层进行粘结，能够增加阻燃层的层数，增强电池包装材料的阻燃效果。
作为举例，具有良好的粘结性能的阻燃材料例如可以为由含磷水性聚氨酯树脂、钛白粉、二甲基硅油、BYK-154助剂组成的阻燃涂料，或者其他，本申请实施例对此不作限定。
图6示出了本申请实施例提供的一种电池包装材料的示意图。如图6所示，该电池包装材料由外至内依次包括防护层1、阻燃层54、耐高温层49(对应于上文中的第一耐高温层的一个示例)、金属层2、耐高温层410(对应于上文中的第二耐高层的一个示例)、阻燃层55和封装层3。其中，阻燃层54和阻燃层55具有较好的粘结性能。这里，阻燃层54也被称为粘接层54，阻燃层55也可以被称为粘接层55，本申请实施例对此不作限 定。
以下示出了制作该电池包装材料的一个示例。首先，在金属层2的上表面和下表面分别涂覆耐高温涂料，形成耐高温层49和耐高温层410；然后使用粘接剂将防护层、上表面和下表面涂覆耐高温涂料的金属层、封装层进行粘结，这里该粘接剂中分散有阻燃剂；最后可以通过压合或热合将各层材料进行复合，得到成品的电池包装材料。
可选的，本申请实施例中，耐高温层、阻燃层和粘接层可以合为一层，即一层材料中同时包括阻燃材料、耐高温材料和粘结材料。这样，能够进一步地减小电池包装材料的厚度。
作为一个示例，图7示出了本申请实施例提供的一种电池包装材料的示意图。如图7所示，该电池包装材料由外至内依次包括防护层1、复合层411、金属层2、复合层412和封装层3。其中，复合层411可以为耐高温材料与粘结材料复合而成，或者为耐高温材料、阻燃材料和粘结材料复合而成。复合层412可以为耐高温材料与粘结材料复合而成，或者为耐高温材料、阻燃材料和粘结材料复合而成。其中，复合层411和复合层412中至少存在一层材料中包含阻燃材料。这里，复合层也被称为其他名称，本申请实施例对此不作限定。
可选的，本申请实施例中，所述防护层之上设置有第三耐高温层。
作为一个示例，图8示出了本申请电池包装材料的一个示例，该电池包装材料由外之内依次设置有：耐高温层415(对应于上文中的第三耐高温层的一个示例)、防护层1、耐高温层413(对应于上文中的第一耐高温层)、金属层2、耐高温层414(对应于上文中的第二耐高温层的一个示例)、阻燃层56和封装层3。其中，耐高温层415设置于防护层的上表面。
一个可选的实施例，在图8所示的电池包装材料中，耐高温层415之上还可以设置阻燃层，或者其他层结构，本申请实施例对此不作限定。
另一个可选的实施例，耐高温层415可以设置于电池包装材料的最外层。可选的，耐高温层415与防护层之间也可以设置于阻燃层，或者其他层结构，本申请实施例对此不作限定。
因此，本申请实施例，一方面能够进一步提高包装材料的耐高温性能，另一方面，还可以利用耐高温材料的高防腐性能、抗氧化性能和耐磨抗冲击的特性来提高电池包装材料的防腐耐磨性能。
本申请一些可能的实现方式中，还可以在封装层的下表面设置耐高温层，或者阻燃层，以进一步增强电池包装材料的阻燃特性，或者耐高温特性，进而提高电池包装材料的防火性能。
另外，现有技术中存在一种锂离子电池包装材料，在铝塑膜中集成有阻燃涂料层，使铝塑膜具备阻燃功能。但是，这种铝塑膜在某些极端热失控情况下并不能完全发挥其阻燃功效。比如，在针刺实验中，针刺点位区域的温度迅速上升，而针刺点位周围大部分区域温度仍维持在室温水平，此时，仅针刺点位的少部分阻燃涂料达到其受热分解温度，产生少量的阻燃气体，而针刺点位周围大部分区域的阻燃涂料由于远未达到其受热分解温度，所以仍维持原状，不具备阻燃作用。少量的阻燃气体无法有效阻止热失控，针刺点位区域的温度继续急速上升，达到铝箔层熔化温度。针刺点位铝箔受热熔化收缩，导致针刺点位 周围的阻燃涂料进一步远离热失控点，仍无法有效发挥其阻燃功效。待到针刺点位周围区域阻燃涂料达到受热分解温度时，针刺点区域热失控已无法被有效阻止。故在此种情况下，很大可能会发生安全事故。
在上面所述的情况下，使用本申请实施例所述的电池包装材料，一方面，金属层之上和金属层之下分别设置有耐高温层，使得金属层在耐高温层的隔离下，不会因为受到高温而迅速熔化收缩，而是保持状态稳定，进而使得阻燃材料不会因为金属受热熔化收缩而被带离热失控点，阻燃层能够有效发挥其阻燃功效。另一方面，当阻燃层充分发挥其阻燃作用时，能够有效阻止热失控，进而避免温度急剧上升所引起的金属熔化，减轻耐高温层的防火压力。因此，本申请实施例中耐高温层和阻燃层能够协同作用，使得电池包装材料同时具备耐高温和阻燃的双重特性，进而具有强效且全面的防火功能。
本申请实施例还提供了一种电池，该电池的正极、负极以及电解质中的至少一种容纳在上述各实施例所述的电池包装材料形成的包装容器中。
本申请实施例还提供了一种终端，该终端包括上述电池。
应理解，本申请实施例中，第一、第二、第三以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的耐高温层、不同的粘接层等。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (13)

  1. 一种电池包装材料，其特征在于，由外到内依次设置有防护层，金属层和封装层，其中，
    所述金属层和所述防护层之间设置有第一耐高温层；
    所述金属层和所述封装层之间设置有第二耐高温层；
    所述防护层之上，或者所述防护层与所述金属层之间，或者，所述金属层与所述封装层之间，或者所述封装层之下设置有阻燃层。
  2. 根据权利要求1所述的电池包装材料，其特征在于，所述第一耐高温层设置于所述金属层的上表面，或者所述第一耐高温层设置于所述防护层的下表面。
  3. 根据权利要求1或2所述的电池包装材料，其特征在于，所述第二耐高温层设置于所述金属层的下表面，或者所述第二耐高温层设置于所述封装层的上表面。
  4. 根据权利要求1-3任一项所述的电池包装材料，其特征在于，所述第一耐高温层至少由耐高温材料组成，所述第二耐高温层至少由耐高温材料组成。
  5. 根据权利要求4所述的电池包装材料，其特征在于，所述耐高温材料包括有机硅耐高温材料或无机硅耐高温材料。
  6. 根据权利要求4或5所述的电池包装材料，其特征在于，所述第一耐高温层中还包括阻燃材料，或者所述第二耐高温层中还包括阻燃材料，或者所述第一耐高温层中还包括粘接材料，或者所述第二耐高温层中还包括粘接材料。
  7. 根据权利要求1-6任一项所述的电池包装材料，其特征在于，所述阻燃层设置于所述防护层、所述金属层和所述封装层中的至少一层的表面。
  8. 根据权利要求1-7任一项所述的电池包装材料，其特征在于，所述阻燃层至少由阻燃材料组成。
  9. 根据权利要求8所述的电池包装材料，其特征在于，所述阻燃材料包括有机阻燃材料或无机阻燃材料；
    其中，所述有机阻燃材料包括以下至少一种：有机卤素阻燃剂、有机磷阻燃剂、异氰尿酸酯阻燃剂、蜜胺基阻燃剂；
    所述无机阻燃剂包括以下至少一种：氧化镁、氢氧化镁、氧化铝、氢氧化铝、磷酸铵、聚合磷酸铵。
  10. 根据权利要求8或9所述的电池包装材料，其特征在于，所述阻燃层中还包括粘结材料。
  11. 根据权利要求1-10任一项所述的电池包装材料，其特征在于，所述防护层之上设置有第三耐高温层。
  12. 根据权利要求1-11任一项所述的电池包装材料，其特征在于，电池包装材料还包括粘接层，所述粘接层设置于所述第一耐高温层和所述防护层之间，或者，所述粘结层设置于所述金属层和所述第一耐高温层之间，或者，所述粘接层设置于所述第二耐高温层和所述封装层之间，或者，所述粘接层设置于所述金属层和所述第二耐高温层之间。
  13. 一种电池，其特征在于，所述电池的正极、负极以及电解质中的至少一种容纳在 如权利要求1-12任一项所述的电池包装材料形成的包装容器中。
PCT/CN2019/124866 2019-01-15 2019-12-12 电池包装材料和电池 WO2020147469A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910035015.4 2019-01-15
CN201910035015.4A CN111435713A (zh) 2019-01-15 2019-01-15 电池包装材料和电池

Publications (1)

Publication Number Publication Date
WO2020147469A1 true WO2020147469A1 (zh) 2020-07-23

Family

ID=68965885

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/124866 WO2020147469A1 (zh) 2019-01-15 2019-12-12 电池包装材料和电池

Country Status (6)

Country Link
US (1) US20200227692A1 (zh)
EP (1) EP3683048A1 (zh)
JP (1) JP2020113538A (zh)
KR (1) KR20200088783A (zh)
CN (1) CN111435713A (zh)
WO (1) WO2020147469A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114497833A (zh) * 2020-11-11 2022-05-13 华为技术有限公司 一种电池包装膜，电池包装膜的制备方法及电子设备
CN112670660A (zh) * 2020-12-24 2021-04-16 天津天银汽车科技有限公司 电动汽车用电池防护盖板
CN113437408B (zh) * 2021-05-07 2022-07-19 东莞市振华新能源科技有限公司 防针刺锂电池的制作方法
WO2023190997A1 (ja) * 2022-03-31 2023-10-05 大日本印刷株式会社 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス
CN114665206A (zh) * 2022-04-14 2022-06-24 南京航空航天大学 一种阻燃防爆的新能源汽车电池壳及其制备方法
CN115011241A (zh) * 2022-05-26 2022-09-06 江苏新澄瑞材料科技有限公司 一种锂电池包热失控隔热防火保护组合物
DE102022206661A1 (de) 2022-06-30 2024-01-04 Volkswagen Aktiengesellschaft Batteriezelle
CN116790157B (zh) * 2023-06-29 2024-05-07 华鼎国联四川电池材料有限公司 一种基于聚乙烯和膨胀阻燃剂的阻燃保护膜及其制备方法与应用

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011060501A (ja) * 2009-09-08 2011-03-24 Toppan Printing Co Ltd リチウムイオン電池用包装材
US20170365824A1 (en) * 2016-06-16 2017-12-21 GM Global Technology Operations LLC Thermal composite
CN206961920U (zh) * 2017-08-04 2018-02-02 苏州宝优际科技股份有限公司 防火隔热膜及具有防火隔热膜的电池
CN207044853U (zh) * 2017-08-01 2018-02-27 东莞市硅翔绝缘材料有限公司 动力电池用聚酰亚胺膜封装隔热棉组合结构
CN207320208U (zh) * 2017-11-07 2018-05-04 吉安力莱新能源科技有限公司 一种高性能绿色表面贴膜的聚合物电池
CN208014751U (zh) * 2018-04-24 2018-10-26 苏州福斯特光伏材料有限公司 用于锂离子电池的软包装材料
CN109103353A (zh) * 2018-06-27 2018-12-28 许昌中舰能源科技有限公司 一种使用安全的锂离子电池

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100341112B1 (ko) * 1999-12-30 2002-06-20 권문구 고온용 폴리올레핀 난연 절연 조성물
KR100574819B1 (ko) * 2004-04-14 2006-04-28 율촌화학 주식회사 리튬 2차 전지 및 휴대용 축전지 셀 포장용 봉지재
KR101237693B1 (ko) * 2004-10-29 2013-02-26 다이니폰 인사츠 가부시키가이샤 적층체 및 2차 전지
KR101050007B1 (ko) * 2008-11-03 2011-07-19 율촌화학 주식회사 셀 포장재 및 그 제조방법
JP6107651B2 (ja) * 2011-05-11 2017-04-05 凸版印刷株式会社 リチウムイオン電池用外装材，リチウムイオン電池，及びリチウムイオン電池の製造方法
EP2735441A4 (en) * 2011-07-21 2014-07-23 Hanwha Chemical Corp BATTERY PACKING MATERIAL WITH HEAT-RESISTANT CHARACTERISTICS
EP2772958B1 (en) * 2011-10-25 2017-12-13 Dai Nippon Printing Co., Ltd. Packaging material for electrochemical cell
CN102602081B (zh) * 2012-03-16 2016-03-02 菏泽天信新材料科技有限公司 锂电池用具耐腐蚀耐穿刺防熔穿短路的铝塑包装膜及其制造方法
JP2014101478A (ja) * 2012-11-22 2014-06-05 Nitto Denko Corp シリコーン樹脂シート及び外装体付き電池
CN205564822U (zh) * 2016-01-04 2016-09-07 深圳市丽得富新能源材料科技有限公司 高性能防爆锂电池用铝塑包装膜
JP6428906B2 (ja) * 2017-12-27 2018-11-28 凸版印刷株式会社 リチウム電池用外装材

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011060501A (ja) * 2009-09-08 2011-03-24 Toppan Printing Co Ltd リチウムイオン電池用包装材
US20170365824A1 (en) * 2016-06-16 2017-12-21 GM Global Technology Operations LLC Thermal composite
CN207044853U (zh) * 2017-08-01 2018-02-27 东莞市硅翔绝缘材料有限公司 动力电池用聚酰亚胺膜封装隔热棉组合结构
CN206961920U (zh) * 2017-08-04 2018-02-02 苏州宝优际科技股份有限公司 防火隔热膜及具有防火隔热膜的电池
CN207320208U (zh) * 2017-11-07 2018-05-04 吉安力莱新能源科技有限公司 一种高性能绿色表面贴膜的聚合物电池
CN208014751U (zh) * 2018-04-24 2018-10-26 苏州福斯特光伏材料有限公司 用于锂离子电池的软包装材料
CN109103353A (zh) * 2018-06-27 2018-12-28 许昌中舰能源科技有限公司 一种使用安全的锂离子电池

Also Published As

Publication number Publication date
CN111435713A (zh) 2020-07-21
JP2020113538A (ja) 2020-07-27
KR20200088783A (ko) 2020-07-23
EP3683048A1 (en) 2020-07-22
US20200227692A1 (en) 2020-07-16

Similar Documents

Publication Publication Date Title
WO2020147469A1 (zh) 电池包装材料和电池
KR101447767B1 (ko) 고온용 진공단열재
KR102486895B1 (ko) 재충전가능 전기 에너지 저장 시스템을 위한 열 장벽 재료
US20180309095A1 (en) Housing material for pouch-type battery and pouch-type battery including same
KR101486634B1 (ko) 터짐불량이 개선된 진공단열재 및 그의 제조방법
WO2021100813A1 (ja) バッテリーパック用熱膨張性耐火材、バッテリーパック用耐火シート、及び車載用バッテリーパック
WO2017110037A1 (ja) 電池パック
US11607861B2 (en) Materials for fire protection
US20120189906A1 (en) Sealed battery casing and sealed battery
CN111851070A (zh) 一种隔热阻燃片及其制备方法
WO2020241843A1 (ja) バッテリー用熱膨張性耐火材
JP2009052680A (ja) 真空断熱材
JP2020132843A (ja) 耐火樹脂組成物、耐火シート、及びバッテリー
KR102276075B1 (ko) 파우치형 리튬이차전지의 내부 실런트층용 다층 복합필름
KR102466520B1 (ko) 고온 안정성 및 기계적 특성이 향상된 셀 파우치 및 그 제조 방법
WO2022230808A1 (ja) 消火用積層体、消火用積層体の製造方法及びエレクトロニクス部材
JP6168200B2 (ja) リチウムイオン電池用外装材及びリチウムイオン電池
CN111682286A (zh) 一种新能源汽车电池组用隔热阻燃片及其制备方法
KR20210096723A (ko) 난연성 복합 패드, 그 제조 방법, 이러한 복합 패드를 포함하는 이차전지 모듈과 이차전지 팩
JP2019143146A (ja) 耐火樹脂組成物、耐火シート、及びバッテリー
JP2022171057A (ja) 消火用積層体
JP2022171060A (ja) 消火用積層体及びエレクトロニクス部材
CN217086781U (zh) 一种新能源汽车动力电池用防火薄膜
CN218535893U (zh) 复合材料和应用其的壳体、电芯单体、电池模组、电池包
KR20240051051A (ko) 복합 시스템을 구비한 방화 장치, 복합 시스템 및 방화 장치를 구비한 배터리 팩

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19910608

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19910608

Country of ref document: EP

Kind code of ref document: A1