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WO2019146926A1 - Pile rechargeable et plaque d'isolation pour pile rechargeable - Google Patents

Pile rechargeable et plaque d'isolation pour pile rechargeable Download PDF

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Publication number
WO2019146926A1
WO2019146926A1 PCT/KR2019/000112 KR2019000112W WO2019146926A1 WO 2019146926 A1 WO2019146926 A1 WO 2019146926A1 KR 2019000112 W KR2019000112 W KR 2019000112W WO 2019146926 A1 WO2019146926 A1 WO 2019146926A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulating plate
glass fiber
silicone rubber
battery
present
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2019/000112
Other languages
English (en)
Korean (ko)
Inventor
이병구
김도균
정상석
신항수
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
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
Priority claimed from KR1020180125529A external-priority patent/KR102242251B1/ko
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Priority to PL19743388.1T priority Critical patent/PL3644392T3/pl
Priority to JP2019569909A priority patent/JP6947361B2/ja
Priority to EP19743388.1A priority patent/EP3644392B1/fr
Priority to ES19743388T priority patent/ES2978158T3/es
Priority to US16/631,591 priority patent/US11532846B2/en
Publication of WO2019146926A1 publication Critical patent/WO2019146926A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the secondary battery includes a nickel cadmium battery, a nickel metal hydride battery, a lithium ion battery, and a lithium ion polymer battery.
  • a secondary battery is not limited to small-sized products such as a digital camera, a P-DVD, an MP3P, a mobile phone, a PDA, a portable game device, a power tool and an e-bike, It is also applied to power storage devices that store power and renewable energy, and backup power storage devices.
  • an electrode assembly (electrode assembly) of a predetermined shape is prepared by first coating an electrode active material slurry on a positive electrode current collector and a negative electrode current collector to prepare a positive electrode and a negative electrode, and laminating them on both sides of a separator. . Then, the electrode assembly is housed in the battery case, and the electrolyte solution is injected and sealed.
  • the secondary battery is classified into a pouch type and a can type according to the material of the case housing the electrode assembly.
  • the pouch type accommodates the electrode assembly in a pouch made of a flexible polymer material having a non-uniform shape.
  • the can type accommodates the electrode assembly in a case made of a material such as metal or plastic having a constant shape.
  • the insulating plate 26 is manufactured by coating phenol (Phenol), which is a thermosetting resin, on a raw material of glass fiber.
  • phenol Phenol
  • the melting point of phenol itself was very low at 40 ° C, and even if it was coated on the glass fiber fabric, there was a problem of mass reduction due to oxidation to carbon dioxide or carbon monoxide at 600 ° C.
  • dust is generated frequently, which makes it difficult to continuously produce the product, resulting in a decrease in the production amount and an increase in the manufacturing cost.
  • an insulating plate for a secondary battery comprising glass fibers formed by crossing glass fiber yarns with weft yarns and warp yarns; And a silicone rubber coated on at least one side of the glass fiber.
  • the thickness may be the same as the thickness of the glass fiber.
  • the silicone rubber may be laminated on at least one side of the glass fiber.
  • the silicon polymer may have a composition ratio of 10 to 20 wt%, and the flame retardant may have a composition ratio of 10 to 15 wt%.
  • the insulating plate may be an upper insulating plate disposed between the electrode assembly and the cap assembly.
  • FIG. 12 is a cross-sectional view of the insulating plate taken along line A-A 'in FIG. 11 according to another embodiment of the present invention.
  • the electrolytic solution filled in the battery can 12 is for transferring lithium ions generated by the electrochemical reaction of the electrode plate during charging and discharging of the secondary battery 1.
  • the electrolytic solution is a mixture of a lithium salt and a high purity organic solvent, Based organic electrolytic solution or a polymer electrolyte.
  • the cap assembly 11 is installed in the beading portion 14 of the battery can 12 while being mounted on the crimping gasket 116.
  • the crimping gasket 116 has a cylindrical shape with both open ends.
  • One end of the crimping gasket 116 facing the inside of the battery can 12 is first bent substantially vertically toward the central axis as shown in FIG. 2, Bent in a substantially vertical direction toward the inside of the battery can 12 and seated in the bead 14.
  • the other end of the crimping gasket 116 is initially extended in a direction parallel to the central axis.
  • FIG 5 is a side view of the insulating plate 16 according to an embodiment of the present invention.
  • the insulating plate 16 according to an embodiment of the present invention is manufactured by coating a silicon rubber 162 on at least one side of the glass fiber 161 once.
  • the insulating plate 16a according to another embodiment of the present invention is manufactured by coating a plurality of times of the silicone rubber 162a on at least one surface of the glass fiber 161a.
  • an insulating plate 16a for insulating the electrode assembly 13 is disposed.
  • the insulating plate 16a according to another embodiment of the present invention may be an upper insulating plate 16a disposed on the upper portion of the electrode assembly as shown in FIG. (Not shown).
  • FIG 8 is a side view of the insulating plate 16a according to another embodiment of the present invention.
  • the insulating plate 16a is manufactured by stacking a first silicone rubber 1621a on at least one surface of the glass fiber 161a, A second silicone rubber 1622a is laminated on the rubber 1621a. That is, the first and second silicone rubbers 1621a and 1622a are sequentially coated and laminated in a plurality of layers.
  • the first and second solutions may be applied to only one side of the raw glass fiber 161a, according to another embodiment of the present invention, the first and second solutions are preferably applied on both sides.
  • the first and second silicone rubbers 1621a and 1622a are coated on both sides of the glass fiber 161a, and the insulating plate 16a according to another embodiment of the present invention has a laminated shape of a plurality of layers .
  • the first silicone rubber 1621a is coated before the second silicone rubber 1622a
  • the first silicone rubber 1621a is further laminated inside
  • the second silicone rubber 1622a is laminated further on the outside, do.
  • five layers are shown as being laminated, but the present invention is not limited thereto.
  • a separate layer may be further included between the glass fiber 161a and the first and second silicone rubbers 1621a and 1622a.
  • the insulating plate 16 according to one embodiment of the present invention and the insulating plate 16a according to another embodiment of the present invention are all coated with at least one surface of the glass fibers 161 and 161a with silicone rubber 162 and 162a So that a plurality of layers are stacked.
  • the thickness of the silicon rubber 162b is equal to the thickness of the glass fiber 161b since the silicon rubber 162b is not laminated on the glass fiber 161a.
  • FIG 11 is a schematic view in which a glass fiber 161b according to another embodiment of the present invention is coated with a second silicone rubber 1622b.
  • the second solution After the second solution is applied, the surface of the glass fiber 161b is scraped off with a knife or the like. Thereby, the thickness of the glass fiber 161b can be adjusted and the surface of the glass fiber 161b can be smoothed.
  • the second solution is dried (S605), the second solvent is evaporated, and the second silicone rubber 1622b is coated on the glass fiber 161b as shown in FIG. 11 (S606).
  • the second silicone rubber 1622b may be inserted into the gap 3 formed between the yarns of the orthogonal glass fibers 161b to fill the gap 3 . Thereby, an insulating plate fabric is produced.
  • the first silicone rubber 1621b is adhered and adhered between the yarns of the glass fibers 161b. 15 and 16, the silicon rubber 162b does not form a separate layer.
  • the glass fibers have a composition ratio of 70 to 80 wt%
  • the silicone rubber has a composition ratio of 20 to 30 wt%.
  • the major chains of silicon polymers are 10-15 wt% of siloxanes and silicones, di-Me, vinyl group-terminated, and 0-5 wt% of dimethylvinylated and trimethylated silica. That is, the composition ratio of the silicone polymer is 10 to 20 wt%.
  • Aluminum trihydroxide, which is a flame retardant, is 10 ⁇ 15 wt% and titanium dioxide is 0 ⁇ 5 wt%. In other words, dimethylvinylated and trimethylated silica and titanium dioxide are not included at all because they are minimum 0 wt%.
  • an insulation plate for a secondary battery the insulation plate being inserted into a case of a secondary battery, the insulation plate comprising: glass fibers formed by crossing glass fiber yarns with weft and warp; And a silicone rubber coated on at least one side of the glass fiber.
  • PET was prepared by using an electrospinning method and 30 mm in width, 30 mm in length, and 0.3 mm in thickness as a nonwoven fabric raw material.
  • the insulating plate of the production example is removed and a standard test piece is again set. A total of three insulating plates of the above production example were prepared, and this process was repeated three times in total.
  • the insulating plate of the production example gradually decreased gradually in mass.
  • the reduced mass width is shown in Table 2 above.
  • the insulating plate of the production example had a mass loss of 3.8 wt% in the range of 0-320 ° C, 9.3 wt% in the range of 320-600 ° C, and 0.3 wt% in the range of 600-700 ° C.
  • the insulating plate according to the production example of the present invention was manufactured by Ref. Compared with the electrolytic solution, LiPF6 was reduced by 3 wt% and LiFSI was decreased by 2.1 wt%. However, in the insulating plate according to Comparative Example 1, LiPF6 and LiFSI were reduced by 0.1 wt% and 0.3 wt%, respectively. In the insulating plate according to Comparative Example 2, LiPF6 and LiFSI were decreased by 1.7 wt% and 10.6 wt%, respectively. That is, LiFSI was most reduced in the insulating plate of Comparative Example 2, which indicates that the insulating plate of Comparative Example 2 was the most active.
  • Critical radiant heat flux during extinguishing means the flow rate of heat at the position where the flame propagates farthest from the centerline of the specimen to be burned and stopped.
  • the recorded heat flux is the value obtained by the calibration test of the testing machine using the calibration plate.
  • the average value of the critical radiant heat flux during the extinguishing of the insulating plate of the production example is 48.6 kW / m 2 , which is larger than the reference value of 20.0 kW / m 2 and thus satisfies the criterion.
  • the insulating plate of the production example was broken at an average tensile strength of 133.64 N / mm < 2 & gt ;.
  • the average elongation at this time was 7.13%.
  • the insulating plate of Comparative Example 1 has a problem of being easily deformed by a small force because of low tensile strength and high elongation. Since the insulating plate of Comparative Example 2 does not have a stretching property, it can not be made into a roll type and can not be fed into a line, so continuous production is impossible and production speed may be lowered. However, the insulating plate of the production example can be made into a roll type rolled up to one side because of its high tensile strength and low elongation, and can be stretched to some extent.
  • the insulating plate 16 for a secondary battery is manufactured, compared with coating with a conventional thermoplastic resin or phenol or the like, so that the properties such as heat resistance and chemical resistance Can be improved.
  • the phenol has a chain bonding form in which the central element is carbon (C)
  • the silicone polymer as a main raw material of the silicone rubber 162 has a chain bonding form in which the central element is silicon (Si). Therefore, it can have high thermal stability. Further, generation of dust is suppressed when the insulating plate 16 for a secondary battery is punched, so that continuous production is possible, production amount increases, and manufacturing cost can be reduced.
  • the insulating plate 16 for the secondary battery can be easily manufactured by forming the mother roll easily by winding the insulating plate raw material before the insulating plate 16 for secondary battery has flexibility.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)
  • Cell Separators (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne une plaque d'isolation pour pile rechargeable qui, afin de résoudre ledit problème, est une plaque d'isolation qui est insérée dans un boîtier d'une pile rechargeable, et qui comprend : un tissu de verre formé par entrecroisement de fils de trame et de chaîne en fibre de verre ; et du caoutchouc de silicone revêtant au moins une surface du tissu de verre.
PCT/KR2019/000112 2018-01-29 2019-01-03 Pile rechargeable et plaque d'isolation pour pile rechargeable Ceased WO2019146926A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PL19743388.1T PL3644392T3 (pl) 2018-01-29 2019-01-03 Bateria akumulatorowa i izolator górny do baterii akumulatorowej
JP2019569909A JP6947361B2 (ja) 2018-01-29 2019-01-03 二次電池及び二次電池用絶縁板
EP19743388.1A EP3644392B1 (fr) 2018-01-29 2019-01-03 Pile rechargeable et plaque d'isolation pour pile rechargeable
ES19743388T ES2978158T3 (es) 2018-01-29 2019-01-03 Batería secundaria y aislante superior para batería secundaria
US16/631,591 US11532846B2 (en) 2018-01-29 2019-01-03 Secondary battery and top insulator for secondary battery

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20180010900 2018-01-29
KR10-2018-0010900 2018-01-29
KR10-2018-0125529 2018-10-19
KR1020180125529A KR102242251B1 (ko) 2018-01-29 2018-10-19 이차 전지 및 이차 전지용 절연판

Publications (1)

Publication Number Publication Date
WO2019146926A1 true WO2019146926A1 (fr) 2019-08-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/000112 Ceased WO2019146926A1 (fr) 2018-01-29 2019-01-03 Pile rechargeable et plaque d'isolation pour pile rechargeable

Country Status (2)

Country Link
CN (1) CN110098371B (fr)
WO (1) WO2019146926A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022545189A (ja) * 2019-11-20 2022-10-26 エルジー エナジー ソリューション リミテッド 二次電池およびそれを含むデバイス
CN117584569A (zh) * 2023-04-07 2024-02-23 德莎欧洲股份公司 防火层压材料

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JP2001283664A (ja) * 2000-03-30 2001-10-12 Kazuo Okabe 柔軟な絶縁シールドカバー材
JP2002184391A (ja) * 2000-12-18 2002-06-28 Sony Corp 円筒型電池の絶縁ワッシャー組立方法及び装置と円筒型電池
JP2002231314A (ja) * 2000-11-28 2002-08-16 Matsushita Electric Ind Co Ltd 非水電解液二次電池
KR20170072525A (ko) * 2015-12-17 2017-06-27 주식회사 엘지화학 절연부재를 포함하는 원통형 전지셀의 제조방법
JP2017170769A (ja) * 2016-03-24 2017-09-28 デンカ株式会社 高熱伝導性ロール状放熱シート素材の製造方法

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CN1560158A (zh) * 2004-02-24 2005-01-05 南京康特复合材料有限责任公司 涂覆玻璃纤维布用水性硅橡胶乳液
KR100561297B1 (ko) * 2004-09-09 2006-03-15 삼성에스디아이 주식회사 리튬 이차 전지
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CN204749409U (zh) * 2015-07-23 2015-11-11 海宁杰特玻纤布业有限公司 一种阻燃软膜
KR101726538B1 (ko) * 2016-01-09 2017-04-13 박상구 복합사 직물의 전열망
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KR102242251B1 (ko) * 2018-01-29 2021-04-21 주식회사 엘지화학 이차 전지 및 이차 전지용 절연판

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001283664A (ja) * 2000-03-30 2001-10-12 Kazuo Okabe 柔軟な絶縁シールドカバー材
JP2002231314A (ja) * 2000-11-28 2002-08-16 Matsushita Electric Ind Co Ltd 非水電解液二次電池
JP2002184391A (ja) * 2000-12-18 2002-06-28 Sony Corp 円筒型電池の絶縁ワッシャー組立方法及び装置と円筒型電池
KR20170072525A (ko) * 2015-12-17 2017-06-27 주식회사 엘지화학 절연부재를 포함하는 원통형 전지셀의 제조방법
JP2017170769A (ja) * 2016-03-24 2017-09-28 デンカ株式会社 高熱伝導性ロール状放熱シート素材の製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022545189A (ja) * 2019-11-20 2022-10-26 エルジー エナジー ソリューション リミテッド 二次電池およびそれを含むデバイス
JP7364157B2 (ja) 2019-11-20 2023-10-18 エルジー エナジー ソリューション リミテッド 二次電池およびそれを含むデバイス
CN117584569A (zh) * 2023-04-07 2024-02-23 德莎欧洲股份公司 防火层压材料

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CN110098371A (zh) 2019-08-06
CN110098371B (zh) 2020-08-14

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