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WO2025197743A1 - Structure de fixation - Google Patents

Structure de fixation

Info

Publication number
WO2025197743A1
WO2025197743A1 PCT/JP2025/009585 JP2025009585W WO2025197743A1 WO 2025197743 A1 WO2025197743 A1 WO 2025197743A1 JP 2025009585 W JP2025009585 W JP 2025009585W WO 2025197743 A1 WO2025197743 A1 WO 2025197743A1
Authority
WO
WIPO (PCT)
Prior art keywords
bolt
hole
collar
fastening structure
head
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.)
Pending
Application number
PCT/JP2025/009585
Other languages
English (en)
Japanese (ja)
Inventor
浩 棚田
ひかり 黒田
幸成 八木下
駆 中村
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.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
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 Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Publication of WO2025197743A1 publication Critical patent/WO2025197743A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings

Definitions

  • This disclosure relates to a fastening structure.
  • Patent Document 1 discloses a battery pack in which a tray and a cover are fastened together with bolts.
  • the tray has a through-hole formed therein through which the bolt passes, and a nut is welded to the tray so that it is concentric with the through-hole, and the cover has another through-hole formed therein through which the bolt passes.
  • Patent Document 2 discloses a recycling method that involves roasting battery packs as they are. This recycling method is said to cause the resin parts and insulating materials inside the battery pack to thermally decompose, causing a short circuit within the battery pack, destroying the battery pack's functionality and ensuring a reliable discharge process. This avoids the need to dismantle the battery packs under high voltage, eliminates the need for long-term storage to allow for natural discharge before roasting, and also eliminates the need for forced discharge, resulting in a recycling method that is safer, shorter, and more efficient than conventional methods.
  • tray and cover disclosed in Patent Document 1 are made of metal, even if the battery pack is roasted as is using the recycling method disclosed in Patent Document 2, the tray and cover will remain fastened together with bolts, and after roasting the battery pack, work such as cutting the bolts will be required.
  • At least one embodiment of the present invention aims to provide a fastening structure that can be released by roasting.
  • a fastening structure in which a bolt passes through a first member and a second member, a first through hole provided in the first member through which the bolt passes is larger than the head of the bolt, and a first collar is provided between the first member and the head of the bolt, the first collar being larger than the first through hole and through which the shank of the bolt passes, and the first collar is made of a material with a lower melting point than the bolt.
  • the configuration of (1) above includes a first spacer that fits into the first through hole, the first spacer being thinner than the first member and through which the threaded portion of the bolt passes.
  • the first spacer can determine the position of the bolt relative to the first through hole, preventing the bolt from loosening.
  • the second through hole provided in the second member through which the bolt passes is a threaded hole into which the threaded portion of the bolt fits.
  • a nut is provided into which the threaded portion of the bolt passing through a second through hole provided in the second member is fitted, and the nut is larger than the second through hole.
  • the threaded portion of the bolt passing through the first through hole and the second through hole can be fitted into the nut, thereby fastening the first member and the second member together.
  • the second through hole provided in the second member through which the bolt passes is larger than the head of the bolt, and a second collar larger than the second through hole and through which the shank of the bolt passes is provided between the second member and a nut fitted onto the threaded portion of the bolt passing through the second through hole.
  • the nut can be inserted into the second Even if the second collar is smaller than the through hole, the threaded portion of the bolt that passes through the second collar can fit into the nut, thereby fastening the first member and the second member together.
  • the second through hole provided in the second member through which the bolt passes is the same size as the first through hole, and is provided between the second member and a nut that fits onto the threaded portion of the bolt that passes through the second through hole.
  • the second collar is larger than the second through hole and through which the shank of the bolt passes; and a common spacer is provided between the first collar and the second collar, has a thickness thinner than the sum of the thicknesses of the first member and the second member, and is fitted into the first through hole and the second through hole, through which the threaded portion of the bolt passes.
  • the common spacer can determine the position of the bolt relative to the first through hole and the second through hole, preventing the bolt from loosening.
  • the first through hole has a large diameter portion larger than the head of the bolt and a small diameter portion smaller than the head of the bolt.
  • the threaded portion of the bolt is positioned in the small diameter portion, allowing the first member and the second member to be fastened together.
  • the fastening structure is roasted at a temperature equal to or higher than the melting point of the first collar but lower than the melting point of the bolt, the first collar melts, allowing the fastening structure to be released. Then, the threaded portion of the bolt can be moved to the large diameter portion, allowing the first member to be removed from the second member.
  • the fastening structure can be released by roasting.
  • FIG. 1 is a cross-sectional view schematically illustrating a fastening structure according to a first embodiment.
  • 1B is a cross-sectional view showing a state in which the first collar and the first spacer shown in FIG. 1A are melted;
  • FIG. 1C is a cross-sectional view showing a state in which the first member shown in FIG. 1B is removed.
  • FIG. 10 is a cross-sectional view schematically illustrating a fastening structure according to a second embodiment.
  • 2B is a cross-sectional view showing a state in which the first collar and the common spacer shown in FIG. 2A are melted;
  • 2C is a cross-sectional view showing a state in which the bolt and the nut have fallen off from the first member and the second member shown in FIG. 2B.
  • FIG. 10 is a diagram schematically illustrating a fastening structure according to a third embodiment.
  • 3B is a cross-sectional view showing a state in which the first collar, the second collar, and the common spacer shown in FIG. 3A are melted;
  • 3C is a cross-sectional view showing a state in which the bolt and the nut have fallen off from the first member and the second member shown in FIG. 3B.
  • FIG. 10A and 10B are diagrams schematically illustrating a fastening structure according to a fourth embodiment, in which FIG. 10A is a cross-sectional view and FIG. 4B is a diagram showing a state in which the first collar and the second collar shown in FIG.
  • FIG. 4A is melted, in which (a) is a cross-sectional view and (b) is a plan view.
  • FIG. 4C is a diagram showing a state in which the bolt and nut shown in FIG. 4B have been moved from the small diameter portion to the large diameter portion, where (a) is a cross-sectional view and (b) is a plan view.
  • FIG. 4D is a diagram showing a state in which the bolt and the nut have fallen off from the first member and the second member shown in FIG. 4C, where (a) is a cross-sectional view and (b) is a plan view.
  • FIG. 4C is a diagram showing a state in which the bolt and the nut shown in FIG. 4B have been moved from the small diameter portion to the large diameter portion, where (a) is a cross-sectional view and (b) is a plan view.
  • FIG. 4D is a diagram showing a state in which the bolt and the nut have fallen off from the first member and the second member shown
  • the fastening structures 1 to 4 are fastening structures in which a bolt passes through a first member and a second member, and are employed, for example, in a battery pack in which a tray and a cover are fastened together by the bolt.
  • the battery pack is mounted on an electric vehicle such as an electric vehicle (EV), a hybrid vehicle (HV), or a fuel cell vehicle (FCV).
  • EV electric vehicle
  • HV hybrid vehicle
  • FCV fuel cell vehicle
  • Hybrid vehicles include plug-in hybrid vehicles (PHVs, PHEVs) that can be charged (externally charged) from an external device (e.g., a quick charger) while parked, and plug-in hybrid vehicles (PHEVs) that can be charged externally while parked and can supply power (externally powered) to an external device (e.g., a general household) while parked.
  • PVs plug-in hybrid vehicles
  • PHEVs plug-in hybrid vehicles
  • PHEVs plug-in hybrid vehicles
  • PHEVs plug-in hybrid vehicles
  • FIG. 1A is a cross-sectional view schematically illustrating a fastening structure 1 according to embodiment 1.
  • Fig. 1B is a cross-sectional view illustrating a state in which the first collar 14 and the first spacer 15 illustrated in Fig. 1A have melted
  • Fig. 1C is a cross-sectional view illustrating a state in which the first member 11 illustrated in Fig. 1B has been removed.
  • the first member 11 and the second member 12 are plate-like bodies.
  • the first member 11 has a first through hole 11a through which the bolt 13 passes
  • the second member 12 has a second through hole 12a through which the bolt 13 passes.
  • the bolt 13 also includes what are called screws or screws.
  • the bolt 13 is, for example, a hexagonal bolt, but is not limited to this and may be a hexagonal socket bolt.
  • the first through hole 11a is larger than the head 13a of the bolt 13 and allows the head 13a of the bolt 13 to pass through.
  • the first through hole 11a is, for example, a circular through hole in plan view that is larger than the head 13a of the bolt 13.
  • the first through hole 11a has a diameter greater than the diagonal length of the hexagon, but is not limited to this and may be a through hole of a shape similar to the head shape of the bolt 13.
  • a first collar 14 is provided between the first member 11 and the head 13a of the bolt 13.
  • the first collar 14 is larger than the first through-hole 11a and receives the threaded portion 13b of the bolt 13.
  • the first collar 14 is circular in a plan view, but is not limited to this and may be rectangular in a plan view.
  • the first collar 14 is made of a material with a lower melting point than the bolt 13, and melts when the fastening structure 1 is roasted at a temperature equal to or higher than the melting point of the first collar 14 but lower than the melting point of the bolt 13.
  • the bolt 13 is made of iron or stainless steel
  • the first collar 14 is made of aluminum or the like, but may also be made of resin or the like.
  • the fastening structure 1 may include a first spacer 15 that fits into the first through hole 11a.
  • the first spacer 15 is thinner than the first member 11 and has a through hole 15a through which the threaded portion 13b of the bolt 13 passes.
  • the first spacer 15 is circular in plan view and has a through hole 15a at its center through which the threaded portion 13b of the bolt 13 passes, but this is not limited to this.
  • the first spacer 15 may have the same or similar shape as the first through hole 11a and may have a through hole 15a at its center through which the threaded portion 13b of the bolt 13 passes.
  • the first spacer 15 is made of a material with a lower melting point than the bolt 13 and melts when the fastening structure 1 is roasted at a temperature equal to or higher than the melting point of the first spacer 15 but lower than the melting point of the bolt 13.
  • the first spacer 15 is made of aluminum or the like, but may also be made of resin or the like.
  • the first spacer 15 may be made of the same material as the bolt 13, regardless of the melting point of the bolt 13, as long as it can be easily removed from the first through hole 11a.
  • the second through hole 12a is a threaded hole into which the threaded portion 13b of the bolt 13 fits.
  • a first spacer 15 that fits into the first through hole 11a is provided, so that the position of the bolt 13 relative to the first through hole 11a can be determined by the first spacer 15, and loosening of the bolt 13 can be suppressed.
  • the second through hole 12a is a threaded hole into which the threaded portion 13b of the bolt 13 fits, so that the first member 11 and the second member 12 can be fastened together by fitting the threaded portion 13b of the bolt 13 into the threaded hole (second through hole 12a).
  • the first collar 14 and first spacer 15 melt, allowing the fastening structure 1 to be released.
  • the head 13a of the bolt 13 can then pass through the first through-hole 11a, allowing the first member 11 to be removed from the second member 12.
  • Fig. 2A is a cross-sectional view schematically illustrating a fastening structure 2 according to embodiment 2.
  • Fig. 2B is a cross-sectional view illustrating a state in which the first collar 14 and the common spacer 25 shown in Fig. 2A have melted
  • Fig. 2C is a cross-sectional view illustrating a state in which the bolt 13 and the nut 26 have fallen off the first member 11 and the second member 12 shown in Fig. 2B.
  • the fastening structure 2 of embodiment 2 includes a nut 26 into which the threaded portion 13b of the bolt 13 passing through the second through hole 12a fits.
  • the nut 26 is larger than the second through hole 22a and cannot be inserted through the second through hole 22a.
  • the second through hole 22a of embodiment 2 has the same shape and size as the first through hole 11a, is larger than the head 13a of the bolt 13, and can be inserted through the head 13a of the bolt 13.
  • the fastening structure 2 of embodiment 2 may include a common spacer 25 that fits into the first through hole 11a and the second through hole 22a.
  • the common spacer 25 is thinner than the sum of the thicknesses of the first member 11 and the second member 12, and has a through hole 25a through which the threaded portion 13b of the bolt 13 passes.
  • the common spacer 25 is circular in plan view, and has a through hole 25a at its center through which the threaded portion 13b of the bolt 13 passes, but is not limited to this.
  • the common spacer 25 may have the same or similar shape as the first through hole 11a and the second through hole 22a, and may have a through hole 25a at its center through which the threaded portion 13b of the bolt 13 passes.
  • the common spacer 25 is made of a material with a lower melting point than the bolt 13, and melts when the fastening structure 2 is roasted at a temperature equal to or higher than the melting point of the common spacer 25 but lower than the melting point of the bolt 13.
  • the common spacer 25 is made of aluminum or other materials, but it may also be made of resin or other materials.
  • the common spacer 25 may be made of any material, regardless of its melting point, as long as it can be easily removed from the first through hole 11a and the second through hole 22a. The rest of the configuration is the same as that of the fastening structure 1 according to embodiment 1.
  • the common spacer 25 allows the position of the bolt 13 relative to the first through hole 11a and the second through hole 22a to be determined, thereby preventing the bolt 13 from loosening.
  • the second through hole 22a in embodiment 2 may be large enough to allow the threaded portion 13b of the bolt 13 to pass through, but large enough to prevent the head 13a of the bolt 13 from passing through.
  • the first spacer 15 can be fitted into the first through hole 11a, and a nut of the same size as the head 13a of the bolt 13 can be used. Also, in this case, even if the first collar 14 and first spacer 15 melt, the head 13a of the bolt 13 cannot pass through the second through hole 22a, but can pass through the first through hole 11a, allowing the first member 11 to be removed from the second member 12.
  • Fig. 3A is a diagram schematically illustrating a fastening structure 3 according to embodiment 3.
  • Fig. 3B is a cross-sectional view illustrating a state in which the first collar 14, the second collar 37, and the common spacer 25 shown in Fig. 3A have melted
  • Fig. 3C is a cross-sectional view illustrating a state in which the bolt 13 and the nut 36 have fallen off the first member 11 and the second member 12 shown in Fig. 3B.
  • the fastening structure 3 of embodiment 3 includes a second collar 37 between the second member 12 and a nut 36 that fits onto the threaded portion 13b of the bolt 13 that passes through the second through hole 22a.
  • the second collar 37 is larger than the second through hole 22a and receives the threaded portion 13b of the bolt 13.
  • the second collar 37 has a circular disk shape in plan view, but is not limited to this and may have a rectangular plate shape in plan view.
  • the second collar 37 is made of a material with a lower melting point than the bolt 13 and melts when the fastening structure 3 is roasted at a temperature equal to or higher than the melting point of the first collar 14 but lower than the melting point of the bolt 13.
  • the second collar 37 may be made of the same material as the bolt 13, regardless of the melting point of the bolt 13. The rest of the configuration is the same as the fastening structure 2 of embodiment 2.
  • the second collar 37 is larger than the second through hole 22a, so even if the nut 36 is smaller than the second through hole 22a, the threaded portion 13b of the bolt 13 that passes through the second collar 37 can fit into the nut 26, thereby fastening the first member 11 and the second member 12 together.
  • Fig. 4A is a diagram schematically illustrating a fastening structure 4 according to embodiment 4, where (a) is a cross-sectional view and (b) is a plan view.
  • Fig. 4B is a diagram illustrating a state in which the first collar 44 and the second collar 47 shown in Fig. 4A have melted, where (a) is a cross-sectional view and (b) is a plan view.
  • Fig. 4C is a diagram illustrating a state in which the bolt 13 and the nut 46 shown in Fig. 4B have been moved from the small diameter portion 41a2 to the large diameter portion 41a1, where (a) is a cross-sectional view and (b) is a plan view.
  • Fig. 4D is a diagram illustrating a state in which the bolt 13 and the nut 46 have fallen off the first member 11 and the second member 12 shown in Fig. 4C, where (a) is a cross-sectional view and (b) is a plan view.
  • the first through hole 41a has a large diameter portion 41a1 that is larger than the head 13a of the bolt 13, and a small diameter portion 41a2 that is smaller than the head 13a of the bolt 13.
  • the head 13a of the bolt 13 can be inserted into the large diameter portion 41a1, and the head 13a of the bolt 13 cannot be inserted into the small diameter portion 41a2.
  • the second through hole 42a according to embodiment 4 has the same shape and size as the first through hole 41a, and the head 13a of the bolt 13 can be inserted into the large diameter portion and the head 13a of the bolt 13 cannot be inserted into the small diameter portion.
  • the second through hole 42a may be smaller than the head 13a of the bolt 13 and cannot be inserted into, as long as the threaded portion 13b of the bolt 13 can be inserted into it.
  • a first collar 44 is provided between the first member 11 and the head 13a of the bolt 13.
  • the first collar 44 is larger than the large diameter portion 41a1 of the first through-hole 41a and receives the threaded portion 13b of the bolt 13.
  • the first collar 44 has a circular disk shape in a plan view, but is not limited to this and may also have a rectangular plate shape in a plan view.
  • the first collar 44 is made of a material with a lower melting point than the bolt 13, and melts when the fastening structure 4 is roasted at a temperature equal to or higher than the melting point of the first collar 44 but lower than the melting point of the bolt 13.
  • the bolt 13 is made of iron or stainless steel
  • the first collar 44 is made of aluminum or the like, but may also be made of resin or the like.
  • the second collar 47 is provided between the nut 46 and the second member 12 and engages with the threaded portion 13b of the bolt 13 passing through the second through hole 42a. Like the first collar 44, the second collar 47 is larger than the large-diameter portion of the second through hole 42a and receives the threaded portion 13b of the bolt 13.
  • the second collar 47 has a circular disk shape in a plan view, but is not limited to this and may also have a rectangular plate shape in a plan view.
  • the second collar 47 is made of a material with a lower melting point than the bolt 13 and melts when the fastening structure 4 is roasted at a temperature equal to or higher than the melting point of the first collar 44 but lower than the melting point of the bolt 13.
  • the second collar 47 may be made of the same material as the bolt 13, regardless of the melting point of the bolt 13. Furthermore, if the second through hole 42a is smaller than the head 13a of the bolt 13 and the head 13a of the bolt 13 cannot be inserted, the second collar 47 is not necessary. Other configurations are the same as those of the fastening structure 1 according to embodiment 1.
  • the threaded portion 13b of the bolt 13 is located in the small diameter portion, allowing the first member 11 and the second member 12 to be fastened together.
  • the fastening structure 4 is roasted at a temperature equal to or higher than the melting temperature of the first collar 44 and the second collar 47 but lower than the melting point of the bolt 13, the first collar 44 and the second collar 47 melt, allowing the fastening of the fastening structure 4 to be released.
  • the threaded portion 13b of the bolt 13 to the large diameter portion 41a1
  • the bolt 13 and the nut 46 fall off from the first member 11 and the second member 12, allowing the first member 11 to be removed from the second member 12.
  • the present invention is not limited to the above-described embodiments, but includes modifications to the above-described embodiments and appropriate combinations of these embodiments.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Plates (AREA)

Abstract

La présente invention concerne une structure de fixation ayant un boulon traversant un premier élément et un second élément, un premier trou traversant qui est ménagé dans le premier élément à travers lequel passe le boulon est plus grand qu'une partie tête du boulon, et un premier collier qui est plus grand que le premier trou traversant et à travers lequel passe une partie tige du boulon est prévu entre le premier élément et la partie tête du boulon, le premier collier étant constitué d'un matériau ayant un point de fusion inférieur à celui du boulon.
PCT/JP2025/009585 2024-03-19 2025-03-13 Structure de fixation Pending WO2025197743A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2024-043807 2024-03-19
JP2024043807 2024-03-19

Publications (1)

Publication Number Publication Date
WO2025197743A1 true WO2025197743A1 (fr) 2025-09-25

Family

ID=97139613

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2025/009585 Pending WO2025197743A1 (fr) 2024-03-19 2025-03-13 Structure de fixation

Country Status (1)

Country Link
WO (1) WO2025197743A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58169279U (ja) * 1982-04-19 1983-11-11 日立金属株式会社 溶解栓
JP2005220962A (ja) * 2004-02-04 2005-08-18 Union Seimitsu:Kk ねじ用付属品およびそれを用いた締結体構造
JP2010003512A (ja) * 2008-06-19 2010-01-07 Toyota Motor Corp 電池パックのリサイクル方法および電池パックのリサイクル装置
JP2010145039A (ja) * 2008-12-19 2010-07-01 Max Co Ltd 設備機器
JP2019075329A (ja) * 2017-10-18 2019-05-16 三菱自動車工業株式会社 電装品ケースのシール構造
JP2023530400A (ja) * 2020-10-19 2023-07-18 エルジー エナジー ソリューション リミテッド 火災抑制構造を有するバッテリーパックハウジング

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58169279U (ja) * 1982-04-19 1983-11-11 日立金属株式会社 溶解栓
JP2005220962A (ja) * 2004-02-04 2005-08-18 Union Seimitsu:Kk ねじ用付属品およびそれを用いた締結体構造
JP2010003512A (ja) * 2008-06-19 2010-01-07 Toyota Motor Corp 電池パックのリサイクル方法および電池パックのリサイクル装置
JP2010145039A (ja) * 2008-12-19 2010-07-01 Max Co Ltd 設備機器
JP2019075329A (ja) * 2017-10-18 2019-05-16 三菱自動車工業株式会社 電装品ケースのシール構造
JP2023530400A (ja) * 2020-10-19 2023-07-18 エルジー エナジー ソリューション リミテッド 火災抑制構造を有するバッテリーパックハウジング

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