WO2023204362A1 - Fire prevention battery pack - Google Patents

Fire prevention battery pack Download PDF

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Publication number
WO2023204362A1
WO2023204362A1 PCT/KR2022/015140 KR2022015140W WO2023204362A1 WO 2023204362 A1 WO2023204362 A1 WO 2023204362A1 KR 2022015140 W KR2022015140 W KR 2022015140W WO 2023204362 A1 WO2023204362 A1 WO 2023204362A1
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WO
WIPO (PCT)
Prior art keywords
resin member
battery cells
fire
battery pack
resin
Prior art date
Application number
PCT/KR2022/015140
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French (fr)
Korean (ko)
Inventor
이기영
Original Assignee
코스본 주식회사
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Publication of WO2023204362A1 publication Critical patent/WO2023204362A1/en

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    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • H01M50/383—Flame arresting or ignition-preventing means
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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

  • the present invention secures mechanical strength by forming a first resin member that accommodates and fixes the battery cells with a urethane-based resin of grade V2, a flame retardant grade of UL94 standard, and secures mechanical strength, prevents ignition in the battery cells, and prevents ignition in the battery cells. It relates to a fire-prevention battery pack that protects the battery cells from external contaminants such as moisture and external fire by wrapping the first resin member with a silicone resin of flame retardant grade V0 (waterproofing and flame retardant).
  • Secondary batteries that can store the generated electrical energy is increasing due to air pollution caused by the use of fossil fuels and the development of alternative energy due to energy depletion.
  • Secondary batteries that can be charged and discharged are closely used in our daily lives, including in mobile devices, electric vehicles, and hybrid electric vehicles.
  • secondary batteries have excellent electrical characteristics, but under abnormal operating conditions such as overcharging, overdischarging, exposure to high temperatures, and electrical short circuits, decomposition reactions of the active materials and electrolytes, which are the components of the battery, are triggered, generating heat, and resulting heat. There is a problem in that heat affects adjacent battery cells, causing additional secondary damage.
  • condensation of moisture in the air between the battery cell and the electrode connection member caused abnormal operation such as an electrical short circuit, and if a fire broke out in one battery cell due to an external fire, etc., the fire spread to nearby battery cells, causing chain ignition. It acted as a factor.
  • the present invention secures mechanical strength by forming a first resin member that accommodates and fixes the battery cells with a urethane-based resin of grade V2, a flame retardant grade of UL94 standard, and secures mechanical strength, prevents ignition in the battery cells, and prevents ignition in the battery cells.
  • the purpose is to provide a fire-proof battery pack that protects the battery cells from external contaminants such as moisture and external fire by wrapping the first resin member with a silicone resin of flame retardant grade V0 (waterproofing and flame retardant).
  • a fire prevention battery pack includes a plurality of battery cells; a first resin member forming a receiving hole in which the battery cell is accommodated; a pair of electrode connection members respectively laminated on the upper and lower surfaces of the first resin member and electrically connected to the positive and negative electrodes of the battery cell; and a second resin member that surrounds and packages the outside of the first resin member on which the pair of electrode connection members are stacked, and is made of a material with higher flame retardancy than the first resin member.
  • the first resin member according to the present invention is preferably made of a urethane-based resin having a predetermined flame retardancy
  • the second resin member is preferably made of a silicone resin having a higher flame retardancy than the first resin member
  • the first resin member according to the present invention is preferably formed as a polyhedral block.
  • the receiving hole of the first resin member according to the present invention is open at the top and bottom so that the positive and negative electrodes of the battery cell accommodated in the receiving hole are exposed to the outside.
  • the second resin member according to the present invention is preferably packaged in the form of a film by surrounding the outside of the first resin member on which the pair of electrode connection members are stacked.
  • the first resin member that accommodates and secures the battery cells is formed with a urethane-based resin of V2, a flame retardant rating of UL94 standards, thereby securing mechanical strength and preventing ignition in the battery cells, and the first resin in which the battery cells are accommodated
  • the member is wrapped with a flame retardant grade V0 silicone resin to protect the battery cells from external contaminants such as moisture and external fire (waterproofing and flameproofing).
  • Figure 1 is an exemplary diagram briefly showing the process of manufacturing a fire-prevention battery pack according to an embodiment of the present invention.
  • Figure 2 is a photograph showing a state in which explosion of a battery pack is tested by artificially applying heat to one of the battery cells among the fire prevention battery packs according to an embodiment of the present invention.
  • Figure 3 is a photograph showing the results before and after an explosion test of a fire-prevention battery pack according to an embodiment of the present invention.
  • Figure 4 is a photograph showing a test state for 35 seconds from the beginning after a fire occurred outside a fire prevention battery pack according to an embodiment of the present invention.
  • Figure 5 is a photograph showing a test state from 50 seconds to 5 minutes after a fire occurred outside a fire prevention battery pack according to an embodiment of the present invention.
  • Figure 6 is a photograph showing the results before and after an external fire test of a fire-prevention battery pack according to an embodiment of the present invention.
  • the present invention includes a plurality of battery cells; A first resin member forming a receiving hole in which the battery cell is accommodated, a pair of electrode connection members stacked on the upper and lower surfaces of the first resin member and electrically connected to the positive and negative electrodes of the battery cell, and A fire prevention battery pack is provided that encloses and packages a first resin member on which a pair of electrode connection members are stacked, and includes a second resin member made of a material with higher flame retardancy than the first resin member.
  • the present invention secures mechanical strength by forming a first resin member that accommodates and fixes the battery cells with a urethane-based resin of grade V2, a flame retardant grade of UL94 standard, and secures mechanical strength, prevents ignition in the battery cells, and prevents ignition in the battery cells. It relates to a fire-prevention battery pack that protects the battery cells from external contaminants such as moisture and external fire by wrapping the first resin member with a silicone resin of flame retardant grade V0 (waterproofing and flame retardant).
  • the fire prevention battery pack includes a battery cell 100, a first resin member 200, an electrode connection member 300, and a second resin member 400,
  • the battery cells 100 are formed in a plurality of at least one and have a cylindrical shape like a normal battery cell.
  • the shape of the battery cell 100 is not limited to a cylindrical shape and the capacity and design conditions of the battery pack Depending on the shape, it can take on various forms.
  • the battery cells 100 have a positive electrode on the upper side and a negative electrode on the lower side.
  • the battery cells 100 are accommodated in the first resin member 200, which is formed as a polyhedral block (triangular, square, pentagonal, cylindrical, etc. block), and
  • the material is made of urethane-based resin of flame retardant grade V2, and preferably has a thickness corresponding to the height of the battery cell 100.
  • the first resin member 200 forms a receiving hole 210 into which the battery cell 100 is inserted and received.
  • the receiving hole 210 of the first resin member 200 is the first resin member.
  • the number corresponding to the number of the battery cells 100 is formed along the area of 200 at regular intervals from each other.
  • the positive electrode of the battery cells 100 accommodated in the receiving hole 210 is exposed upward, and the negative electrode is exposed downward.
  • the first resin member 200 is made of a urethane-based resin with a flame retardant grade of V2, so that it can secure mechanical strength to protect the battery cells 100 from external physical shock, and the battery Even if ignition occurs in the cell 100, it does not ignite or spread easily.
  • the electrode connection members 300 are a pair, each forming a plate shape, and are stacked on the upper and lower surfaces of the first resin member 200, respectively, and are provided in the receiving hole 210 of the first resin member 200.
  • the positive and negative electrodes of each of the received battery cells 100 are electrically connected.
  • the electrode connection member 300 is preferably electrically connected to the positive and negative electrodes of each of the battery cells 100 by spot welding, soldering, and wire bonding.
  • a terminal portion 310 is extended on one side of the electrode connection member 300, and is electrically connected to other electrical and electronic devices when later assembled into a device.
  • the second resin member 400 surrounds and packages the first resin member 200 on which the pair of electrode connection members 300 are stacked.
  • the second resin member 400 is packaged by surrounding the entire exterior of the first resin member 200 on which the pair of electrode connection members 300 are laminated with a silicone resin of flame retardant grade V0, and packaging the battery cell from the outside. (100) are sealed.
  • the battery cell is protected from external contaminants such as moisture and external fire. (100) It exerts waterproof and flame-retardant functions to protect people.
  • the first resin member 200 is prepared.
  • the first resin member 200 is formed by molding a urethane-based resin of flame retardant grade V2, and is formed into a hexahedral block with a length and thickness corresponding to the height of the battery cell 100, and the first resin member ( A plurality of receiving holes 210 are formed along the area of 200, the number of which corresponds to the number of battery cells 100, and are formed at regular intervals from each other.
  • the first resin member 200 is made of a urethane-based resin with a flame retardant grade of V2, so that it can secure mechanical strength to protect the battery cells 100 from external physical shock, and the battery Even if ignition occurs in the cell 100, it does not ignite or spread easily.
  • the battery cells 100 are inserted and accommodated in the receiving holes 210 of the prepared first resin member 200.
  • the positive electrodes of the battery cells 100 accommodated in the receiving hole 210 are exposed upward and the negative electrodes are exposed downward.
  • a pair of electrode connection members 300 are stacked on the upper and lower surfaces of the first resin member 200 in which the battery cell 100 is accommodated in the receiving hole 210, respectively.
  • the electrode connection member 300 is stacked on the upper and lower surfaces of the first resin member 200, respectively, and serves as a positive electrode for each of the battery cells 100 accommodated in the receiving hole 210 of the first resin member 200. and the negative electrode are electrically connected.
  • the first resin member 200 on which the pair of electrode connection members 300 are stacked is wrapped and packaged with the second resin member 400.
  • the second resin member 400 is a silicone resin of flame retardant grade V0
  • the first resin member 200 on which the pair of electrode connection members 300 are stacked is packaged by wrapping the entire exterior in the form of a film. , sealing the battery cells 100 from the outside.
  • the entire first resin member 200 on which the pair of electrode connection members 300 are laminated is immersed in a liquid silicone resin. Silicone resin is applied to the surface in the form of a film for packaging.
  • the fire prevention battery pack forms a first resin member that accommodates and secures the battery cells with a urethane-based resin of flame retardant grade V2, thereby securing mechanical strength and preventing ignition in the battery cells.
  • the first resin member containing the battery cells is wrapped with a V0 flame retardant silicone resin to protect the battery cells from external contaminants such as moisture and external fire (waterproofing and flame retardant).
  • Figure 2 is a photograph showing a state in which explosion of a battery pack is tested by artificially applying heat to one of the battery cells among the fire prevention battery packs according to an embodiment of the present invention
  • Figure 3 is a photograph showing a state in which explosion of the battery pack is tested according to an embodiment of the present invention. This photo shows the results before and after the explosion test of the fire prevention battery pack.
  • Figure 4 is a photograph showing a test state for 35 seconds from the beginning (when ignition starts) when a fire is generated outside a fire prevention battery pack according to an embodiment of the present invention
  • Figure 5 is an implementation of the present invention.
  • a fire is generated from the outside of a fire prevention battery pack according to an example, and is a photograph showing the test state from 50 seconds to 5 minutes (when combustion ends) from the start of the fire.
  • Figure 6 shows a fire prevention according to an embodiment of the present invention. This photo shows the results before and after the external fire test of the battery pack.

Abstract

The present invention provides a fire prevention battery pack comprising: a plurality of battery cells; a first resin member having an accommodation hole in which the battery cells are accommodated; a pair of electrode connection members electrically connected to positive and negative electrodes of the battery cells while being laminated on the upper and lower surfaces, respectively, of the first resin member; and a second resin member which wraps around and packages the first resin member in which the pair of electrode connection members are laminated. The first resin member, which accommodates and fixes the battery cells with a urethane-based resin of a grade V2 flame retardant, is formed to prevent ignition of the battery cells while achieving mechanical strength, and the first resin member, in which the battery cells are accommodated, is wrapped with a silicone resin of a grade V0 flame retardant to protect (make waterproof and flame retardant) the battery cells from external contaminants such as moisture and external fire.

Description

화재 방지 전지팩Fire prevention battery pack
본 발명은 UL94 규격의 난연 등급 V2등급의 우레탄 계열 수지로 전지셀들을 수용하여 고정하는 제1수지부재를 형성하여 기계적 강도를 확보하면서, 상기 전지셀에서의 발화를 방지하고, 상기 전지셀이 수용된 제1수지부재를 난연 등급 V0등급의 실리콘 수지로 감싸, 수분 및 외부화재와 같은 외부 오염원으로부터 상기 전지셀들을 보호(방수 및 방염)하는 화재 방지 전지팩에 관한 것이다.The present invention secures mechanical strength by forming a first resin member that accommodates and fixes the battery cells with a urethane-based resin of grade V2, a flame retardant grade of UL94 standard, and secures mechanical strength, prevents ignition in the battery cells, and prevents ignition in the battery cells. It relates to a fire-prevention battery pack that protects the battery cells from external contaminants such as moisture and external fire by wrapping the first resin member with a silicone resin of flame retardant grade V0 (waterproofing and flame retardant).
최근 화석연료의 사용에 따른 대기오염, 에너지 고갈로 인한 대체에너지 개발로 인해 생산된 전기 에너지를 저장할 수 있는 이차전지에 관한 수요가 증가하고 있다. 충방전이 가능한 이차전지는 모바일 기기, 전기 자동차, 하이브리드 전기자동차 등에 사용되는 등 일상생활에 밀접하게 사용되고 있다.Recently, the demand for secondary batteries that can store the generated electrical energy is increasing due to air pollution caused by the use of fossil fuels and the development of alternative energy due to energy depletion. Secondary batteries that can be charged and discharged are closely used in our daily lives, including in mobile devices, electric vehicles, and hybrid electric vehicles.
현대사회에서 필수불가결하게 사용되고 있는 각종 전자기기의 에너지원으로 사용되고 있는 이차전지는 모바일 기기의 사용량 증가 및 복잡화, 전기 자동차 등의 개발로 인해 요구되는 용량이 증가되고 있다. The capacity of secondary batteries, which are used as an energy source for various electronic devices that are indispensable in modern society, is increasing due to the increased use and complexity of mobile devices and the development of electric vehicles.
사용자의 수요를 충족시키기 위해 소형 기기에는 다수의 전지 셀을 배치하고 있으나, 자동차 등에는 다수개의 전지 셀을 전기적으로 연결하는 배터리 모듈 또는 이러한 배터리 모듈을 다수 구비한 배터리 팩이 사용된다.In order to meet user demand, a large number of battery cells are placed in small devices, but battery modules that electrically connect multiple battery cells or battery packs that include multiple such battery modules are used in automobiles, etc.
한편, 이차 전지는 우수한 전기적 특성을 가지고 있지만, 과충전, 과방전, 고온 노출, 전기적 단락 등 비정상적인 작동 상태에서 전지의 구성요소들인 활물질, 전해질 등의 분해반응이 유발되어 열이 발생하고, 이로 인해 발생한 열로 인접 전지셀에 영향을 끼쳐 추가적인 2차 피해가 일어나는 문제점이 있다.On the other hand, secondary batteries have excellent electrical characteristics, but under abnormal operating conditions such as overcharging, overdischarging, exposure to high temperatures, and electrical short circuits, decomposition reactions of the active materials and electrolytes, which are the components of the battery, are triggered, generating heat, and resulting heat. There is a problem in that heat affects adjacent battery cells, causing additional secondary damage.
또한, 전지셀과 전극연결부재 사이에 공기 중 수분의 응결로 전기적 단락 등 비정상적인 작동을 야기하였고, 외부화재에 등에 의해 어느 한 전지셀에 화재가 발생하면 인근 전지셀에 화재가 확대되는 연쇄적 발화에 한 요인으로 작용하였다.In addition, condensation of moisture in the air between the battery cell and the electrode connection member caused abnormal operation such as an electrical short circuit, and if a fire broke out in one battery cell due to an external fire, etc., the fire spread to nearby battery cells, causing chain ignition. It acted as a factor.
종래기술로는 제10-2019-0132631호(2019.11.28)를 참조할 수 있다.For prior art, please refer to No. 10-2019-0132631 (2019.11.28).
본 발명은 UL94 규격의 난연 등급 V2등급의 우레탄 계열 수지로 전지셀들을 수용하여 고정하는 제1수지부재를 형성하여 기계적 강도를 확보하면서, 상기 전지셀에서의 발화를 방지하고, 상기 전지셀이 수용된 제1수지부재를 난연 등급 V0등급의 실리콘 수지로 감싸, 수분 및 외부화재와 같은 외부 오염원으로부터 상기 전지셀들을 보호(방수 및 방염)하는 화재 방지 전지팩을 제공하는 것을 그 목적으로 한다.The present invention secures mechanical strength by forming a first resin member that accommodates and fixes the battery cells with a urethane-based resin of grade V2, a flame retardant grade of UL94 standard, and secures mechanical strength, prevents ignition in the battery cells, and prevents ignition in the battery cells. The purpose is to provide a fire-proof battery pack that protects the battery cells from external contaminants such as moisture and external fire by wrapping the first resin member with a silicone resin of flame retardant grade V0 (waterproofing and flame retardant).
본 발명에 따른 화재 방지 전지팩은 복수 개의 전지셀; 상기 전지셀이 수용되는 수용홀을 형성한 제1수지부재; 상기 제1수지부재의 상, 하면에 각각 적층되면서 상기 전지셀의 양전극, 음전극과 전기적으로 연결되는 한 쌍의 전극연결부재; 및 상기 한 쌍의 전극연결부재가 적층된 제1수지부재를 외부를 감싸 패키징하되, 상기 제1수지부재보다 난연성이 더 높은 재질로 이루어진 제2수지부재;를 포함한다.A fire prevention battery pack according to the present invention includes a plurality of battery cells; a first resin member forming a receiving hole in which the battery cell is accommodated; a pair of electrode connection members respectively laminated on the upper and lower surfaces of the first resin member and electrically connected to the positive and negative electrodes of the battery cell; and a second resin member that surrounds and packages the outside of the first resin member on which the pair of electrode connection members are stacked, and is made of a material with higher flame retardancy than the first resin member.
이때 본 발명에 따른 상기 제1수지부재는 소정의 난연성을 가지는 우레탄 계열 수지로 이루어지고, 상기 제2수지부재는 상기 제1수지부재보다 높은 난연성을 가지는 실리콘 수지로 이루어진 것이 바람직하다.At this time, the first resin member according to the present invention is preferably made of a urethane-based resin having a predetermined flame retardancy, and the second resin member is preferably made of a silicone resin having a higher flame retardancy than the first resin member.
그리고 본 발명에 따른 상기 제1수지부재는 다면체의 블록으로 형성하는 것이 바람직하다.And the first resin member according to the present invention is preferably formed as a polyhedral block.
여기서 본 발명에 따른 상기 제1수지부재의 수용홀은 상부와 하부가 개구되어, 상기 수용홀에 수용된 전지셀의 양전극 및 음전극이 외부로 노출되는 것이 바람직하다.Here, it is preferable that the receiving hole of the first resin member according to the present invention is open at the top and bottom so that the positive and negative electrodes of the battery cell accommodated in the receiving hole are exposed to the outside.
또한, 본 발명에 따른 상기 제2수지부재는 피막의 형태로 상기 한 쌍의 전극연결부재가 적층된 제1수지부재 외부를 감싸 패키징하는 것이 바람직하다.In addition, the second resin member according to the present invention is preferably packaged in the form of a film by surrounding the outside of the first resin member on which the pair of electrode connection members are stacked.
본 발명에 따른 화재 방지 전지팩에 의해 나타나는 효과는 다음과 같다.The effects exhibited by the fire prevention battery pack according to the present invention are as follows.
UL94 규격의 난연 등급 V2등급의 우레탄 계열 수지로 전지셀들을 수용하여 고정하는 제1수지부재를 형성하여 기계적 강도를 확보하면서, 상기 전지셀에서의 발화를 방지하고, 상기 전지셀이 수용된 제1수지부재를 난연 등급 V0등급의 실리콘 수지로 감싸, 수분 및 외부화재와 같은 외부 오염원으로부터 상기 전지셀들을 보호(방수 및 방염)한다.The first resin member that accommodates and secures the battery cells is formed with a urethane-based resin of V2, a flame retardant rating of UL94 standards, thereby securing mechanical strength and preventing ignition in the battery cells, and the first resin in which the battery cells are accommodated The member is wrapped with a flame retardant grade V0 silicone resin to protect the battery cells from external contaminants such as moisture and external fire (waterproofing and flameproofing).
도 1은 본 발명의 일 실시 예에 따른 화재 방지 전지팩을 제조하는 과정을 간략하게 보인 예시도이다.Figure 1 is an exemplary diagram briefly showing the process of manufacturing a fire-prevention battery pack according to an embodiment of the present invention.
도 2는 본 발명의 일 실시 예에 따른 화재 방지 전지팩 중 어느 한 전지셀에 인위적으로 열을 가해 전지팩의 폭발을 시험하는 상태를 보인 사진이다.Figure 2 is a photograph showing a state in which explosion of a battery pack is tested by artificially applying heat to one of the battery cells among the fire prevention battery packs according to an embodiment of the present invention.
도 3은 본 발명의 일 실시 예에 따른 화재 방지 전지팩의 폭발 시험 전, 후의 결과를 보인 사진이다.Figure 3 is a photograph showing the results before and after an explosion test of a fire-prevention battery pack according to an embodiment of the present invention.
도 4는 본 발명의 일 실시 예에 따른 화재 방지 전지팩의 외부에서 화재를 발생시켜, 초기부터 35초 간의 시험 상태를 보인 사진이다.Figure 4 is a photograph showing a test state for 35 seconds from the beginning after a fire occurred outside a fire prevention battery pack according to an embodiment of the present invention.
도 5는 본 발명의 일 실시 예에 따른 화재 방지 전지팩의 외부에서 화재를 발생시켜, 화재 발생 50초부터 5분 간의 시험 상태를 보인 사진이다.Figure 5 is a photograph showing a test state from 50 seconds to 5 minutes after a fire occurred outside a fire prevention battery pack according to an embodiment of the present invention.
도 6은 본 발명의 일 실시 예에 따른 화재 방지 전지팩의 외부 화재 시험 전, 후의 결과를 보인 사진이다.Figure 6 is a photograph showing the results before and after an external fire test of a fire-prevention battery pack according to an embodiment of the present invention.
본 발명은 복수 개의 전지셀; 상기 전지셀이 수용되는 수용홀을 형성한 제1수지부재와, 상기 제1수지부재의 상, 하면에 각각 적층되면서 상기 전지셀의 양전극, 음전극과 전기적으로 연결되는 한 쌍의 전극연결부재, 및 상기 한 쌍의 전극연결부재가 적층된 제1수지부재를 외부를 감싸 패키징하되, 상기 제1수지부재보다 난연성이 더 높은 재질로 이루어진 제2수지부재를 포함하는 화재 방지 전지팩을 제공한다.The present invention includes a plurality of battery cells; A first resin member forming a receiving hole in which the battery cell is accommodated, a pair of electrode connection members stacked on the upper and lower surfaces of the first resin member and electrically connected to the positive and negative electrodes of the battery cell, and A fire prevention battery pack is provided that encloses and packages a first resin member on which a pair of electrode connection members are stacked, and includes a second resin member made of a material with higher flame retardancy than the first resin member.
이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시 예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여, 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Prior to this, the terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor should appropriately define the concept of terms in order to explain his or her invention in the best way. Based on the principle of definability, it must be interpreted with meaning and concept consistent with the technical idea of the present invention.
따라서 본 명세서에 기재된 실시 예와 도면에 도시된 구성은 본 발명의 가장 바람직한 실시 예에 불과할 뿐이고, 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들은 대체할 수 있는 균등한 변형 예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent the entire technical idea of the present invention, so at the time of filing this application, they can be replaced by equivalent equivalents. It should be understood that variations may exist.
본 발명은 UL94 규격의 난연 등급 V2등급의 우레탄 계열 수지로 전지셀들을 수용하여 고정하는 제1수지부재를 형성하여 기계적 강도를 확보하면서, 상기 전지셀에서의 발화를 방지하고, 상기 전지셀이 수용된 제1수지부재를 난연 등급 V0등급의 실리콘 수지로 감싸, 수분 및 외부화재와 같은 외부 오염원으로부터 상기 전지셀들을 보호(방수 및 방염)하는 화재 방지 전지팩에 관한 것으로, 도면을 참조하여 보다 상세하게 살펴보면 다음과 같다.The present invention secures mechanical strength by forming a first resin member that accommodates and fixes the battery cells with a urethane-based resin of grade V2, a flame retardant grade of UL94 standard, and secures mechanical strength, prevents ignition in the battery cells, and prevents ignition in the battery cells. It relates to a fire-prevention battery pack that protects the battery cells from external contaminants such as moisture and external fire by wrapping the first resin member with a silicone resin of flame retardant grade V0 (waterproofing and flame retardant). Refer to the drawings for more details. Looking at it, it is as follows.
도 1을 참조한 본 발명의 일 실시 예에 따른 화재 방지 전지팩은 전지셀(100)과, 제1수지부재(200), 전극연결부재(300), 제2수지부재(400)를 포함하는데, 먼저 상기 전지셀(100)은 적어도 하나 이상 복수 개로, 통상의 전지셀과 같이 원주형을 이루는 것이 바람직하나, 상기 전지셀(100)의 형태는 원주형에 한정하지 않고 전지팩의 용량 및 설계 조건에 따라 다양한 형태를 이룰 수 있다.The fire prevention battery pack according to an embodiment of the present invention with reference to FIG. 1 includes a battery cell 100, a first resin member 200, an electrode connection member 300, and a second resin member 400, First, it is preferable that the battery cells 100 are formed in a plurality of at least one and have a cylindrical shape like a normal battery cell. However, the shape of the battery cell 100 is not limited to a cylindrical shape and the capacity and design conditions of the battery pack Depending on the shape, it can take on various forms.
이때 상기 전지셀(100)들은 그 상측에 양전극을 구비하고, 하측에는 음전극을 구비한다.At this time, the battery cells 100 have a positive electrode on the upper side and a negative electrode on the lower side.
그리고 상기 전지셀(100)들은 상기 제1수지부재(200)에 수용되는데, 상기 제1수지부재(200)는 다면체의 블록(삼각, 사각, 오각, 원주형 등의 블록)으로 형성되고, 그 재질은 난연등급 V2 등급의 우레탄 계열 수지로 이루어지며, 상기 전지셀(100)의 높이에 대응하는 길이로 두께를 가지는 것이 바람직하다.And the battery cells 100 are accommodated in the first resin member 200, which is formed as a polyhedral block (triangular, square, pentagonal, cylindrical, etc. block), and The material is made of urethane-based resin of flame retardant grade V2, and preferably has a thickness corresponding to the height of the battery cell 100.
여기서 상기 제1수지부재(200)에는 상기 전지셀(100)이 삽입되어 수용되는 수용홀(210)을 형성하는데, 상기 제1수지부재(200)의 수용홀(210)은 상기 제1수지부재(200)의 면적을 따라 상기 전지셀(100)의 개수에 대응하는 개수로, 서로 일정한 간격을 두고 형성된다.Here, the first resin member 200 forms a receiving hole 210 into which the battery cell 100 is inserted and received. The receiving hole 210 of the first resin member 200 is the first resin member. The number corresponding to the number of the battery cells 100 is formed along the area of 200 at regular intervals from each other.
이때 상기 수용홀(210)에 수용되는 전지셀(100)들은 상향을 향해 양전극이 노출되고, 하향을 향해 음전극이 노출된다.At this time, the positive electrode of the battery cells 100 accommodated in the receiving hole 210 is exposed upward, and the negative electrode is exposed downward.
따라서 상기 제1수지부재(200)는 난연 등급 V2등급을 갖는 우레탄 계열 수지로 이루어짐에 따라 외부에서 가해지는 물리적 충격에 전지셀(100)들을 보호할 수 있는 기계적 강도를 확보할 수 있고, 상기 전지셀(100)에서 발화가 일어나도 쉽게 발화하거나 확산되지 않는다.Therefore, the first resin member 200 is made of a urethane-based resin with a flame retardant grade of V2, so that it can secure mechanical strength to protect the battery cells 100 from external physical shock, and the battery Even if ignition occurs in the cell 100, it does not ignite or spread easily.
또한, 상기 전극연결부재(300)는 한 쌍으로, 각각 판상을 이루고, 상기 제1수지부재(200)의 상, 하면에 각각 적층되면서 상기 제1수지부재(200)의 수용홀(210)에 수용된 전지셀(100)들 각각의 양전극과 음전극을 전기적으로 연결한다. In addition, the electrode connection members 300 are a pair, each forming a plate shape, and are stacked on the upper and lower surfaces of the first resin member 200, respectively, and are provided in the receiving hole 210 of the first resin member 200. The positive and negative electrodes of each of the received battery cells 100 are electrically connected.
이때 상기 전극연결부재(300)는 상기 전지셀(100)들 각각의 양전극 및 음전극과 스폿용접, 솔더링, 및 와이어 본딩되어 전기적으로 연결되는 것이 바람직하다. At this time, the electrode connection member 300 is preferably electrically connected to the positive and negative electrodes of each of the battery cells 100 by spot welding, soldering, and wire bonding.
그리고 상기 전극연결부재(300)의 일편에는 단자부(310)가 연장 형성되어, 추후 장치에 조립될 시, 다른 전기, 전자기기와, 전기적으로 연결된다.Additionally, a terminal portion 310 is extended on one side of the electrode connection member 300, and is electrically connected to other electrical and electronic devices when later assembled into a device.
더불어 상기 제2수지부재(400)는 상기 한 쌍의 전극연결부재(300)가 적층된 제1수지부재(200)를 감싸 패키징한다.In addition, the second resin member 400 surrounds and packages the first resin member 200 on which the pair of electrode connection members 300 are stacked.
이때 상기 제2수지부재(400)는 난연등급 V0 등급의 실리콘수지로 상기 한 쌍의 전극연결부재(300)가 적층된 제1수지부재(200)를 외부 전체를 감싸 패키징하여, 외부로부터 전지셀(100)들을 밀폐시킨다.At this time, the second resin member 400 is packaged by surrounding the entire exterior of the first resin member 200 on which the pair of electrode connection members 300 are laminated with a silicone resin of flame retardant grade V0, and packaging the battery cell from the outside. (100) are sealed.
따라서 상기 제2수지부재(400)가 한 쌍의 전극연결부재(300)가 적층된 제1수지부재(200)를 외부 전체를 감싸 패키징함에 따라 같은 수분 및 외부화재와 같은 외부 오염원으로부터 상기 전지셀(100)들을 보호하는 방수 및 방염 기능을 발휘한다.Therefore, as the second resin member 400 wraps and packages the entire exterior of the first resin member 200 on which a pair of electrode connection members 300 are stacked, the battery cell is protected from external contaminants such as moisture and external fire. (100) It exerts waterproof and flame-retardant functions to protect people.
본 발명의 일 실시 예에 따른 화재 방지 전지팩의 제조 과정을 살펴보면, 먼저 제1단계로, 제1수지부재(200)를 준비한다.Looking at the manufacturing process of a fire-prevention battery pack according to an embodiment of the present invention, first, in the first step, the first resin member 200 is prepared.
이때 상기 제1수지부재(200)는 난연등급 V2 등급의 우레탄 계열 수지를 성형하여, 전지셀(100)의 높이에 대응하는 길이로 두께를 가지는 육면체의 블록으로 형성되고, 상기 제1수지부재(200)의 면적을 따라 상기 전지셀(100)의 개수에 대응하는 개수로, 서로 일정한 간격을 두고 형성된 복수 개의 수용홀(210)이 형성된다. At this time, the first resin member 200 is formed by molding a urethane-based resin of flame retardant grade V2, and is formed into a hexahedral block with a length and thickness corresponding to the height of the battery cell 100, and the first resin member ( A plurality of receiving holes 210 are formed along the area of 200, the number of which corresponds to the number of battery cells 100, and are formed at regular intervals from each other.
여기서 상기 제1수지부재(200)는 난연 등급 V2등급을 갖는 우레탄 계열 수지로 이루어짐에 따라 외부에서 가해지는 물리적 충격에 전지셀(100)들을 보호할 수 있는 기계적 강도를 확보할 수 있고, 상기 전지셀(100)에서 발화가 일어나도 쉽게 발화하거나 확산되지 않는다.Here, the first resin member 200 is made of a urethane-based resin with a flame retardant grade of V2, so that it can secure mechanical strength to protect the battery cells 100 from external physical shock, and the battery Even if ignition occurs in the cell 100, it does not ignite or spread easily.
다음은 제2단계로, 준비된 제1수지부재(200)의 수용홀(210)에 전지셀(100)들을 삽입하여 수용한다.Next, in the second step, the battery cells 100 are inserted and accommodated in the receiving holes 210 of the prepared first resin member 200.
이때 상기 수용홀(210)에 수용되는 전지셀(100)들은 상향을 향해 양전극이 노출되고, 하향을 향해 음전극이 노출되는 것이 바람직하다.At this time, it is preferable that the positive electrodes of the battery cells 100 accommodated in the receiving hole 210 are exposed upward and the negative electrodes are exposed downward.
다음은 제3단계로, 한 쌍의 전극연결부재(300)를 상기 수용홀(210)에 전지셀(100)이 수용된 제1수지부재(200)의 상,하면에 각각 적층한다.Next, in the third step, a pair of electrode connection members 300 are stacked on the upper and lower surfaces of the first resin member 200 in which the battery cell 100 is accommodated in the receiving hole 210, respectively.
이때 상기 전극연결부재(300)는 상기 제1수지부재(200)의 상, 하면에 각각 적층되면서 상기 제1수지부재(200)의 수용홀(210)에 수용된 전지셀(100)들 각각의 양전극과 음전극을 전기적으로 연결된다. At this time, the electrode connection member 300 is stacked on the upper and lower surfaces of the first resin member 200, respectively, and serves as a positive electrode for each of the battery cells 100 accommodated in the receiving hole 210 of the first resin member 200. and the negative electrode are electrically connected.
다음은 제4단계로, 제2수지부재(400)로 한 쌍의 전극연결부재(300)가 적층된 제1수지부재(200)를 감싸 패키징한다.Next, in the fourth step, the first resin member 200 on which the pair of electrode connection members 300 are stacked is wrapped and packaged with the second resin member 400.
이때 상기 제2수지부재(400)는 난연등급 V0 등급의 실리콘 수지로, 상기 한 쌍의 전극연결부재(300)가 적층된 제1수지부재(200)를 외부 전체를 피막의 형태로 감싸 패키징하여, 외부로부터 전지셀(100)들을 밀폐시킨다.At this time, the second resin member 400 is a silicone resin of flame retardant grade V0, and the first resin member 200 on which the pair of electrode connection members 300 are stacked is packaged by wrapping the entire exterior in the form of a film. , sealing the battery cells 100 from the outside.
일례로, 액상의 실리콘수지에 한 쌍의 전극연결부재(300)가 적층된 제1수지부재(200)를 담가 한 쌍의 전극연결부재(300)가 적층된 제1수지부재(200)의 전체면에 실리콘 수지가 피막의 형태로 도포되어 패키징한다.For example, the entire first resin member 200 on which the pair of electrode connection members 300 are laminated is immersed in a liquid silicone resin. Silicone resin is applied to the surface in the form of a film for packaging.
따라서 본 발명의 일 실시 예에 따른 화재 방지 전지팩은 난연 등급 V2등급의 우레탄 계열 수지로 전지셀들을 수용하여 고정하는 제1수지부재를 형성하여 기계적 강도를 확보하면서, 상기 전지셀에서의 발화를 방지하고, 상기 전지셀이 수용된 제1수지부재를 난연 등급 V0등급의 실리콘 수지로 감싸, 수분 및 외부화재와 같은 외부 오염원으로부터 상기 전지셀들을 보호(방수 및 방염)한다. Therefore, the fire prevention battery pack according to an embodiment of the present invention forms a first resin member that accommodates and secures the battery cells with a urethane-based resin of flame retardant grade V2, thereby securing mechanical strength and preventing ignition in the battery cells. In addition, the first resin member containing the battery cells is wrapped with a V0 flame retardant silicone resin to protect the battery cells from external contaminants such as moisture and external fire (waterproofing and flame retardant).
도 2는 본 발명의 일 실시 예에 따른 화재 방지 전지팩 중 어느 한 전지셀에 인위적으로 열을 가해 전지팩의 폭발을 시험하는 상태를 보인 사진이고, 도 3은 본 발명의 일 실시 예에 따른 화재 방지 전지팩의 폭발 시험 전, 후의 결과를 보인 사진이다.Figure 2 is a photograph showing a state in which explosion of a battery pack is tested by artificially applying heat to one of the battery cells among the fire prevention battery packs according to an embodiment of the present invention, and Figure 3 is a photograph showing a state in which explosion of the battery pack is tested according to an embodiment of the present invention. This photo shows the results before and after the explosion test of the fire prevention battery pack.
도 2 및 도 3를 참조하면, 전지셀 5 X 5 모듈의 중앙에 위치한 전지셀 1개를 열선으로 가열하여 강제 폭발시킨 후 화재 확산 평가 결과, 화재의 전이가 발생되지 않는 것을 확인할 수 있다.Referring to Figures 2 and 3, as a result of evaluating the spread of fire after heating one battery cell located in the center of a 5 x 5 battery cell module with a hot wire and forcing it to explode, it can be confirmed that no spread of fire occurs.
도 4는 본 발명의 일 실시 예에 따른 화재 방지 전지팩의 외부에서 화재를 발생시켜, 초기부터 35초간(발화가 시작되는 시점)의 시험 상태를 보인 사진이고, 도 5는 본 발명의 일 실시 예에 따른 화재 방지 전지팩의 외부에서 화재를 발생시켜, 화재 발생 50초부터 5분간(연소가 종료되는 시점)의 시험 상태를 보인 사진이며, 도 6은 본 발명의 일 실시 예에 따른 화재 방지 전지팩의 외부 화재 시험 전, 후의 결과를 보인 사진이다.Figure 4 is a photograph showing a test state for 35 seconds from the beginning (when ignition starts) when a fire is generated outside a fire prevention battery pack according to an embodiment of the present invention, and Figure 5 is an implementation of the present invention. A fire is generated from the outside of a fire prevention battery pack according to an example, and is a photograph showing the test state from 50 seconds to 5 minutes (when combustion ends) from the start of the fire. Figure 6 shows a fire prevention according to an embodiment of the present invention. This photo shows the results before and after the external fire test of the battery pack.
도 4 내지 도 6을 참조하면, 전지셀 1개를 외부로 노출시킨 후, 외부에서 가열하여 화재 발생시키고, 연쇄 폭발 점검 결과 외부의 화재로 인한 연소가 발생하지 않는 것을 확인 할 수 있다.Referring to Figures 4 to 6, after exposing one battery cell to the outside, it is heated from the outside to generate a fire, and as a result of chain explosion inspection, it can be confirmed that no combustion occurs due to the external fire.
본 발명은 도면에 도시된 실시 예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시 예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.The present invention has been described with reference to the embodiments shown in the drawings, but these are merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

Claims (5)

  1. 화재를 방지할 수 있는 화재 방지 전지팩의 구조에 있어서, In the structure of a fire prevention battery pack that can prevent fire,
    복수 개의 전지셀;A plurality of battery cells;
    상기 전지셀이 수용되는 수용홀을 형성한 제1수지부재;a first resin member forming a receiving hole in which the battery cell is accommodated;
    상기 제1수지부재의 상, 하면에 각각 적층되면서 상기 전지셀의 양전극, 음전극과 전기적으로 연결되는 한 쌍의 전극연결부재; 및a pair of electrode connection members respectively laminated on the upper and lower surfaces of the first resin member and electrically connected to the positive and negative electrodes of the battery cell; and
    상기 한 쌍의 전극연결부재가 적층된 제1수지부재를 외부를 감싸 패키징하되, 상기 제1수지부재보다 난연성이 더 높은 재질로 이루어진 제2수지부재;를 포함하는 화재 방지 전지팩.A fire prevention battery pack comprising a second resin member that surrounds and packages the outside of the first resin member on which the pair of electrode connection members are stacked, and is made of a material with higher flame retardancy than the first resin member.
  2. 청구항 1에 있어서,In claim 1,
    상기 제1수지부재는 소정의 난연성을 가지는 우레탄 계열 수지로 이루어지고,The first resin member is made of a urethane-based resin having a predetermined flame retardancy,
    상기 제2수지부재는 상기 제1수지부재보다 높은 난연성을 가지는 실리콘 수지로 이루어진 것을 특징으로 하는 화재 방지 전지팩.A fire-prevention battery pack, wherein the second resin member is made of a silicone resin having higher flame retardancy than the first resin member.
  3. 청구항 1에 있어서,In claim 1,
    상기 제1수지부재는The first resin member is
    다면체의 블록으로 형성하는 것을 특징으로 하는 화재 방지 전지팩.A fire-prevention battery pack characterized by being formed from polyhedral blocks.
  4. 청구항 3에 있어서,In claim 3,
    상기 제1수지부재의 수용홀은 상부와 하부가 개구되어, 상기 수용홀에 수용된 전지셀의 양전극 및 음전극이 외부로 노출되는 것을 특징으로 하는 화재 방지 전지팩.A fire prevention battery pack, characterized in that the receiving hole of the first resin member is open at the top and bottom, and the positive and negative electrodes of the battery cell accommodated in the receiving hole are exposed to the outside.
  5. 청구항 4에 있어서,In claim 4,
    상기 제2수지부재는The second resin member is
    피막의 형태로 상기 한 쌍의 전극연결부재가 적층된 제1수지부재 외부를 감싸 패키징하는 화재 방지 전지팩.A fire-prevention battery pack that is packaged by wrapping the outside of the first resin member on which the pair of electrode connection members are laminated in the form of a film.
PCT/KR2022/015140 2022-04-22 2022-10-07 Fire prevention battery pack WO2023204362A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210046684A (en) * 2018-07-30 2021-04-28 카덴차 이노베이션, 인크 Lithium ion battery
KR20210130834A (en) * 2017-02-08 2021-11-01 엘켐 실리콘즈 유에스에이 코포레이션 Secondary battery pack with improved thermal management
KR20220001225A (en) * 2020-06-29 2022-01-05 주식회사 엘지에너지솔루션 Manufacturing Method Of Battery Modules To Prevent Thermal Runaway Propagation
KR20220014117A (en) * 2020-07-28 2022-02-04 에스케이온 주식회사 Sandwich fire wall and battery pack comprising the same
KR20220023522A (en) * 2020-08-21 2022-03-02 주식회사 엘지에너지솔루션 Battery Module To Control Thermal Runaway Propagation And Battery Pack Including It

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210130834A (en) * 2017-02-08 2021-11-01 엘켐 실리콘즈 유에스에이 코포레이션 Secondary battery pack with improved thermal management
KR20210046684A (en) * 2018-07-30 2021-04-28 카덴차 이노베이션, 인크 Lithium ion battery
KR20220001225A (en) * 2020-06-29 2022-01-05 주식회사 엘지에너지솔루션 Manufacturing Method Of Battery Modules To Prevent Thermal Runaway Propagation
KR20220014117A (en) * 2020-07-28 2022-02-04 에스케이온 주식회사 Sandwich fire wall and battery pack comprising the same
KR20220023522A (en) * 2020-08-21 2022-03-02 주식회사 엘지에너지솔루션 Battery Module To Control Thermal Runaway Propagation And Battery Pack Including It

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