WO2021201293A1 - Emballage externe pour dispositifs de stockage électrique, procédé de fabrication dudit emballage externe, et dispositif de stockage électrique - Google Patents

Emballage externe pour dispositifs de stockage électrique, procédé de fabrication dudit emballage externe, et dispositif de stockage électrique Download PDF

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Publication number
WO2021201293A1
WO2021201293A1 PCT/JP2021/014412 JP2021014412W WO2021201293A1 WO 2021201293 A1 WO2021201293 A1 WO 2021201293A1 JP 2021014412 W JP2021014412 W JP 2021014412W WO 2021201293 A1 WO2021201293 A1 WO 2021201293A1
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WO
WIPO (PCT)
Prior art keywords
storage device
heat
power storage
layer
exterior material
Prior art date
Application number
PCT/JP2021/014412
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English (en)
Japanese (ja)
Inventor
純 景山
憲 村澤
Original Assignee
大日本印刷株式会社
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 大日本印刷株式会社 filed Critical 大日本印刷株式会社
Priority to JP2022511168A priority Critical patent/JPWO2021201293A1/ja
Publication of WO2021201293A1 publication Critical patent/WO2021201293A1/fr

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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
    • B32B27/00—Layered products comprising a layer 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • 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
    • H01M50/116—Primary casings; Jackets or wrappings 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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • 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
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or 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
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/193—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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • a base material layer / barrier layer / adhesive layer / heat-sealing resin layer is sequentially laminated.
  • a film-like laminate has been proposed (see, for example, Patent Document 1).
  • the present disclosure is an exterior material for a power storage device composed of a laminate including at least a base material layer, a barrier layer, and a heat-sealing resin layer in this order. Until it reaches a high temperature (for example, about 100 ° C.), it is sealed with an exterior material for a power storage device.
  • a main object of the present invention is to provide an exterior material for a power storage device, which can open the material and release the gas generated inside the power storage device to the outside.
  • the exterior material for a power storage device of the present disclosure is an exterior material for a power storage device composed of a laminate including at least a base material layer, a barrier layer, and a heat-sealing resin layer in this order.
  • the exterior material for use is a heat measured by heat-sealing the heat-sealing resin layers with each other under the conditions of a temperature of 190 ° C. and a surface pressure of 1.0 MPa for 3 seconds, and peeling the heat-sealing resin layers from each other.
  • the following heat seal strength lowering temperature T ° C. is included in the measurement temperature range of 110 ° C. or higher and 120 ° C. or lower.
  • the MD of the laminated body and the RD of the metal foil usually match, the surface of the metal foil of the laminated body is observed and the rolling direction (RD) of the metal foil is specified. Thereby, the MD of the laminated body can be specified. Further, since the TD of the laminated body is in the direction perpendicular to the MD of the laminated body, the TD of the laminated body can also be specified.
  • the exterior material for a power storage device of the present disclosure preferably has a heat seal strength when the measurement temperature is 120 ° C. in the above-mentioned measurement of the heat seal strength. Is 2N / 15mm or more, more preferably 5N / 15mm or more. From the same viewpoint, the heat seal strength is preferably 70 N / 15 mm or less, more preferably 60 N / 15 mm or less. The preferable range of the heat seal strength is about 2 to 70 N / 15 mm, about 2 to 60 N / 15 mm, about 5 to 70 N / 15 mm, and about 5 to 60 N / 15 mm.
  • the preferred range of the Martens hardness is about 10.0 to 25.0 MPa, about 10.0 to 20.0 MPa, about 11.0 to 25.0 MPa, about 11.0 to 20.0 MPa, and about 12.0 to.
  • About 25.0 MPa, about 12.0 to 20.0 MPa can be mentioned. Since the Martens hardness at 100 ° C. is within the above range, the heat-sealing resin layer is difficult to move even when gas is generated from the inside of the power storage device due to heat and the internal pressure starts to rise, which is unexpected. It is possible to prevent the package from being opened at a temperature, and it is possible to prevent the exterior material for the power storage device from being opened by, for example, the gas generated by heating in the baking process in the manufacturing process of the power storage device.
  • the method for measuring the Martens hardness is as follows.
  • saturated fatty acid amide examples include lauric acid amide, palmitic acid amide, stearic acid amide, bechenic acid amide, hydroxystearic acid amide and the like.
  • unsaturated fatty acid amide examples include oleic acid amide and erucic acid amide.
  • substituted amide examples include N-oleyl palmitate amide, N-stearyl stearyl amide, N-stearyl oleate amide, N-oleyl stealic acid amide, N-stearyl erucate amide and the like.
  • methylolamide examples include methylolstearic amide.
  • examples of the polyurethane adhesive include a polyurethane adhesive in which a polyol compound and an isocyanate compound are reacted in advance, and a polyurethane adhesive containing the polyol compound.
  • examples of the polyurethane adhesive include a polyurethane adhesive obtained by reacting a polyurethane compound in which a polyol compound and an isocyanate compound are previously reacted with water such as in the air to cure the polyurethane compound.
  • the polyol compound it is preferable to use a polyester polyol having a hydroxyl group in the side chain in addition to the hydroxyl group at the end of the repeating unit.
  • colorant contained in the colored layer include the same as those exemplified in the column of [Adhesive layer 2].
  • polyacrylic acid means a polymer of acrylic acid.
  • the acrylic resin is preferably a copolymer of an acrylic acid and a dicarboxylic acid or a dicarboxylic acid anhydride, and an ammonium salt or a sodium salt of a copolymer of an acrylic acid and a dicarboxylic acid or a dicarboxylic acid anhydride.
  • it is preferably an amine salt. Only one type of acrylic resin may be used, or two or more types may be mixed and used.
  • the cross-linking agent is at least one selected from the group consisting of a compound having a functional group of any of an isocyanate group, a glycidyl group, a carboxyl group and an oxazoline group and a silane coupling agent.
  • the phosphoric acid or phosphate is condensed phosphoric acid or condensed phosphate.
  • the time-of-flight secondary ion mass spectrometry analysis of the composition of the corrosion resistant coating using, for example, secondary ion consisting Ce and P and O (e.g., Ce 2 PO 4 +, CePO 4 - at least 1, such as species) or, for example, secondary ion of Cr and P and O (e.g., CrPO 2 +, CrPO 4 - peak derived from at least one), such as is detected.
  • secondary ion consisting Ce and P and O e.g., Ce 2 PO 4 +, CePO 4 - at least 1, such as species
  • secondary ion of Cr and P and O e.g., CrPO 2 +, CrPO 4 - peak derived from at least one
  • the heat-sealing resin layer 4 has a melting peak temperature of 130 ° C. or lower observed in the exterior material for the power storage device of the present disclosure.
  • the melting peak temperature is preferably about 100 ° C. or higher, more preferably about 110 ° C. or higher, still more preferably about 120 ° C. or higher, and preferably about 150 ° C. or lower, more preferably 145 ° C. or higher. Below, it is more preferably 138 ° C. or lower.
  • the preferred range of the melting peak temperature is about 100 to 150 ° C, about 100 to 145 ° C, about 100 to 138 ° C, about 100 to 130 ° C, about 110 to 150 ° C, about 110 to 145 ° C, and about 110 to 138 ° C.
  • the number of melting peak temperatures may be one or plural. Further, for example, a melting peak temperature of 130 ° C. or lower may be observed in the heat-sealing resin layer 4, and a melting peak temperature of more than 130 ° C. may be further observed. From the viewpoint of more preferably exerting the effects of the invention of the present disclosure, it is preferable that the melting peak temperatures observed in the heat-sealing resin layer 4 are all 145 ° C. or lower.
  • the method for measuring the melting peak temperature is as follows.
  • polystyrene resin examples include polyethylenes such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, and linear low-density polyethylene; ethylene- ⁇ -olefin copolymers; homopolypropylene and block copolymers of polypropylene (for example, with propylene).
  • Polyolefins such as ethylene block copolymers) and polypropylene random copolymers (eg, propylene and ethylene random copolymers); propylene- ⁇ -olefin copolymers; ethylene-butene-propylene tarpolymers and the like.
  • polypropylene is preferable.
  • the polyolefin resin may be a block copolymer or a random copolymer. One type of these polyolefin resins may be used alone, or two or more types may be used in combination.
  • the thickness of the heat-sealing resin layer 4 is not particularly limited as long as the heat-sealing resin layers have a function of heat-sealing to seal the power storage device element, but is preferably about 100 ⁇ m or less, preferably about 100 ⁇ m or less. It is about 85 ⁇ m or less, more preferably about 15 to 85 ⁇ m.
  • the thickness of the heat-sealing resin layer 4 is preferably about 85 ⁇ m or less, more preferably about 15 to 45 ⁇ m, for example.
  • the two-component curable polyurethane examples include a polyurethane containing a first agent containing a polyol compound and a second agent containing an isocyanate compound.
  • a two-component curable polyurethane using a polyol such as a polyester polyol, a polyether polyol, and an acrylic polyol as a first agent and an aromatic or aliphatic polyisocyanate as a second agent can be mentioned.
  • the polyurethane include a polyurethane compound obtained by reacting a polyol compound and an isocyanate compound in advance, and a polyurethane containing the isocyanate compound.
  • Example 6 A barrier layer of maleic anhydride-modified polypropylene (PPa1 in Table 1) as an adhesive layer (thickness 23 ⁇ m) and random polypropylene (PP2 in Table 1 respectively) as a heat-sealing resin layer (thickness 22 ⁇ m).
  • An exterior material for a power storage device was obtained in which a layer (40 ⁇ m) / adhesive layer (23 ⁇ m) / heat-sealing resin layer (22 ⁇ m) was laminated in this order.
  • the probe 11 is first installed on the surface of the heat-sealing resin layer 4 in the cross section of the exterior material for the power storage device (FIG. 7). Measurement start A).
  • the cross section at this time is a portion where the cross section of the heat-sealing resin layer 4 obtained by cutting in the thickness direction of the exterior material for the power storage device is exposed.
  • FIG. 7 shows the probe installation position 4a. Cutting was performed using a commercially available rotary microtome.
  • Example 1 the difference between the melting peak temperature and the softening point of the heat-sealing resin layer was 3 ° C. Further, in Example 5, the difference between the melting peak temperature and the softening point of the heat-sealing resin layer was 2 ° C.
  • the test sample was placed in an oven, heated from room temperature (25 ° C.) at a heating rate of 5 ° C./min until the test sample temperature reached 130 ° C., and held at 130 ° C. for 30 minutes.
  • the opening of the exterior material for the power storage device due to the increase in internal pressure was evaluated according to the following criteria. The results are shown in Table 1.
  • B The package was opened at a temperature of 110 ° C. or higher and lower than 120 ° C.
  • C The package was not opened even after being held at 130 ° C. for 30 minutes, or was opened at a temperature lower than 110 ° C.
  • Base material layer 2 Adhesive layer 3 Barrier layer 4 Heat-sealing resin layer 5 Adhesive layer 6 Surface coating layer 10 Exterior material for power storage devices

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

L'invention concerne un emballage externe pour dispositifs de stockage électrique qui est composé d'un stratifié pourvu d'au moins une couche de substrat, une couche barrière et une couche de résine thermo-adhésive dans cet ordre, lors de la mesure de la résistance du joint d'étanchéité à la chaleur, dans laquelle une mesure est effectuée lors de l'étanchéité à la chaleur de la couche de résine thermo-adhésive dans des conditions d'une température de 190 °C et d'une pression spécifique de 1,0 MPa pendant 3 secondes, puis de la séparation de la couche de résine thermo-adhésive, la température de diminution de la résistance du joint d'étanchéité à la chaleur T °C de l'emballage externe pour des dispositifs de stockage électrique se situe dans la plage de température mesurée de 110 °C à 120 °C. La température de diminution de la résistance du joint d'étanchéité à la chaleur T °C : la température mesurée dans la mesure de résistance de joint d'étanchéité à la chaleur à laquelle la résistance de joint d'étanchéité à la chaleur atteint 35 N/15 mm ou plus et à laquelle la résistance de joint d'étanchéité à la chaleur à la température de diminution de la résistance de joint d'étanchéité à la chaleur T °C + 10 °C est de 10 N/15 mm ou moins.
PCT/JP2021/014412 2020-04-03 2021-04-02 Emballage externe pour dispositifs de stockage électrique, procédé de fabrication dudit emballage externe, et dispositif de stockage électrique WO2021201293A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022511168A JPWO2021201293A1 (fr) 2020-04-03 2021-04-02

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020067559 2020-04-03
JP2020-067559 2020-04-03

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WO2021201293A1 true WO2021201293A1 (fr) 2021-10-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023058701A1 (fr) * 2021-10-06 2023-04-13 大日本印刷株式会社 Matériau d'emballage externe pour dispositifs d'accumulation d'énergie, son procédé de production, et dispositif d'accumulation d'énergie
KR20240001036A (ko) 2022-06-23 2024-01-03 가부시키가이샤 레조낙·패키징 전지용 포장재

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015008119A (ja) * 2013-05-31 2015-01-15 昭和電工パッケージング株式会社 電池用外装材及び電池
JP2015035325A (ja) * 2013-08-08 2015-02-19 大日本印刷株式会社 電池用包装材料
JP2015174321A (ja) * 2014-03-14 2015-10-05 昭和電工パッケージング株式会社 包装材、電池用外装ケース及び電池
JP2019029300A (ja) * 2017-08-03 2019-02-21 大日本印刷株式会社 電池用包装材料、その製造方法、及び電池

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015008119A (ja) * 2013-05-31 2015-01-15 昭和電工パッケージング株式会社 電池用外装材及び電池
JP2015035325A (ja) * 2013-08-08 2015-02-19 大日本印刷株式会社 電池用包装材料
JP2015174321A (ja) * 2014-03-14 2015-10-05 昭和電工パッケージング株式会社 包装材、電池用外装ケース及び電池
JP2019029300A (ja) * 2017-08-03 2019-02-21 大日本印刷株式会社 電池用包装材料、その製造方法、及び電池

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023058701A1 (fr) * 2021-10-06 2023-04-13 大日本印刷株式会社 Matériau d'emballage externe pour dispositifs d'accumulation d'énergie, son procédé de production, et dispositif d'accumulation d'énergie
KR20240001036A (ko) 2022-06-23 2024-01-03 가부시키가이샤 레조낙·패키징 전지용 포장재

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