WO2018088577A1 - Joint pour bloc-batterie lithium-ion - Google Patents

Joint pour bloc-batterie lithium-ion Download PDF

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Publication number
WO2018088577A1
WO2018088577A1 PCT/KR2016/012785 KR2016012785W WO2018088577A1 WO 2018088577 A1 WO2018088577 A1 WO 2018088577A1 KR 2016012785 W KR2016012785 W KR 2016012785W WO 2018088577 A1 WO2018088577 A1 WO 2018088577A1
Authority
WO
WIPO (PCT)
Prior art keywords
gasket
bolt
split
battery pack
coupling portion
Prior art date
Application number
PCT/KR2016/012785
Other languages
English (en)
Korean (ko)
Inventor
김태준
김해겸
김택길
Original Assignee
울브린코리아(주)
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 울브린코리아(주) filed Critical 울브린코리아(주)
Priority to PCT/KR2016/012785 priority Critical patent/WO2018088577A1/fr
Publication of WO2018088577A1 publication Critical patent/WO2018088577A1/fr

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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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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 relates to a gasket for sealing a lithium ion battery pack.
  • O-rings are applied for airtightness in battery packs that store and cool a large number of batteries, but they are not easy to assemble and require expensive processing costs for assembly.
  • the method of inserting the O-ring on the battery pack assembly surface has a problem that the workability is lowered and the processing cost for assembly is increased.
  • FIG. 1 shows an exploded view of a lithium ion battery pack in which a gasket is installed between the coupling parts.
  • An integrated gasket 3 is installed between the coupling portions 9a and 9b of each of the first and second housings 5 and 8.
  • the integrated gasket 3 is installed between the coupling parts 9a and 9b such that the fastening holes 3a are arranged in parallel with the coupling holes 9a-1 and 9b-1, and fastened by bolts.
  • the integrated gasket 3 Since the integrated gasket 3 has a hollow shape and is thinly disposed only between the coupling portions 9a and 9b, after the shearing operation of manufacturing the integrated gasket 3, the material inside the integrated gasket 3 is removed. It needs to be reused to minimize scrap losses and increase productivity.
  • One object of the present invention is to provide a gasket for a lithium ion battery pack that minimizes scrap loss while using a rubber-coated metal material as a sealing member.
  • a gasket for a lithium ion battery pack of the present invention is installed between the coupling portion of the lithium ion battery pack for fastening the coupling portion of each of the first and second housings by a plurality of bolt coupling.
  • the gasket includes a plurality of split gaskets that are divided and installed between at least some of the plurality of bolts, and screwing portions at both ends of each of the split gaskets are provided with fastening holes for installing the bolts.
  • the screw coupling parts adjacent to each other are disposed such that the fastening holes overlap each other so as to be coupled by the bolts, and the screw couplings near the fastening holes overlapped with each other due to the pressure of the head of the bolt in the fastened state of the bolts.
  • the overlapping portion of the screwed portion is such that the head portion of the bolt It is disposed inward of the outer diameter.
  • the screw coupling portion is formed to be inclined toward the end of the screw coupling portion.
  • An air gap is formed between the end of the screw coupling portion, one side of the other split gasket adjacent to the end of the screw coupling portion, and the coupling portion adjacent to the screw coupling portion, and the air gap has the bolt connected to the coupling portion. It can be sealed in the fastened state.
  • the end of the screw engaging portion comprises an arc portion of a predetermined diameter, the diameter of the arc portion of the screw engaging portion is made smaller than the diameter of the bolt head.
  • the split gasket includes: a foam rubber forming an upper surface and a lower surface; And steel disposed between the upper and lower surfaces, wherein the screw coupling portions of the divided gaskets adjacent to each other overlap each other, and the foam rubbers overlapping each other have a thickness greater than that of the foam rubbers not overlapping each other.
  • the gasket of the present invention is composed of split gaskets joined by bolts, thereby reducing scrap loss during manufacture, thereby improving productivity.
  • the screw coupling portions of the divided gaskets overlapped with each other are disposed inward of the head of the bolt, so that the screw coupling portions overlapping each other are in close contact with each other between the coupling portions to seal inside the first and second housings.
  • FIG. 1 is an exploded perspective view of a lithium ion battery pack in which a conventional gasket is installed.
  • Figure 2 is an exploded perspective view of a lithium ion battery pack is installed gasket of the present invention.
  • FIG. 3 is a conceptual diagram showing a four-piece split gasket.
  • FIG. 4 is a conceptual diagram illustrating a gasket in which a gasket is divided between all bolts of the coupling part.
  • FIG. 5 is a cross-sectional view showing a state in which a bolt is mounted before the gasket of AA 'cross section is pressed
  • FIG. 6 is a cross-sectional view showing a state in which the gasket is pressed by fastening the bolt of AA' cross section of FIG. to be.
  • the lithium ion battery pack is combined with the first and second housings 5 and 8.
  • the lithium ion battery pack has a battery installation space for accommodating the battery therein by combining the first and second housings 5 and 8.
  • the first and second housings 5, 8 each have an engaging portion 9 in contact with each other at the edges.
  • the coupling part 9 includes first and second coupling parts 9a and 9b.
  • the first coupling part 9a is provided at the edge of the first housing 5, and the second coupling part 9b is provided. It is provided at the edge of the second housing (8).
  • a gasket 100 is installed between the first and second coupling parts 9a and 9b, and the coupling part 9 is fastened by a plurality of bolts 4 to secure the first and second housings 5 and 8. To combine.
  • the gasket 100 of the present invention is installed between the first and second coupling parts 9a and 9b to seal between the first and second coupling parts 9a and 9b.
  • the gasket 100 of the present invention may be made of a material of rubber coated material (RCM).
  • RCM rubber coated material
  • the gasket 100 of the RCM material may be formed of steel 10b-5 disposed between the foam rubber 10a-4 and the foam rubber 10a-4 forming upper and lower surfaces.
  • the gasket 100 includes a plurality of split gaskets 10a, 10b, 10c, and 10d, and fastening holes 10a-1 are formed at both ends of each of the split gaskets 10a, and the adjacent gaskets 10a,
  • the fastening holes 10a-1 and 10b-1 of 10b are disposed to overlap each other, and the bolts 4 fastening the coupling part 9 are overlapping fastening holes 10a-of the split gaskets 10a and 10b adjacent to each other. 1, 10b-1).
  • FIG. 3 an example in which the gasket 100 is divided into four is illustrated.
  • the split gaskets 10a, 10b, 10c, and 10d may be partially manufactured from the RCM material. In this case, the amount of the RCM material discarded can be minimized, which reduces production costs and improves productivity.
  • Both ends of the split gasket may be provided with a screw coupling portion (10a-2) is formed a fastening hole (10a-1) is coupled to the screw.
  • Split gaskets 10a and 10b adjacent to each other between the first and second coupling portions 9a and 9b are arranged such that at least a portion of the screw coupling portions 10a-2 and 10b-2 overlap each other.
  • the fastening holes 10a-1 and 10b-1 of the split gaskets 10a and 10b overlapping each other with the coupling holes 9a-1 and 9b-1 of the first and second coupling portions 9a and 9b are provided. They are arranged side by side and are joined by bolts 4.
  • the overlapping portions of the screw coupling portions 10a-2 and 10b-2 of the split gaskets 10a and 10b overlapped with each other are disposed inward of the outer diameter of the head portion 4a of the bolt 4, respectively.
  • the screw coupling portion (10a-2, 10b-2) may be made to be inclined toward the ends (10a-3, 10b-3).
  • Such a structure is such that the ends 10a-3 and 10b-3 of the threaded portions 10a-2 and 10b-2 are arranged inside the outer diameter of the head 4a of the bolt 4 and are advantageous for sealing. .
  • the end (10a-3) of the screw coupling portion (10a-2) of the split gasket (10a) may comprise an arc of a predetermined diameter, in this case, the end ( The diameter of 10a-3 is made smaller than the diameter of the head 4a of the bolt 4.
  • a gasket 100 composed of four split gaskets 10a, 10b, 10c and 10d is shown.
  • the screw engaging portion 10a-2 is inclined toward the end 10a-3, and the screw engaging portion 10a-2 is provided.
  • the fastening hole (10a-3) is an example of being arranged concentrically with the fastening hole (10b-3) of the overlapping screw coupling portion (10b-2).
  • the circular arc diameter of the screw 10a-2 end 10a-3 is made smaller than the head 4a of the screw.
  • the first and second coupling parts 9a and 9b provided at the upper and lower portions of the adjacent gaskets 10a are not shown. This will be described in FIG. 5.
  • FIG. 4 shows an example of a gasket 200 consisting of split gaskets 20a, 20b, 20c divided between all bolts 4 installed in the coupling part 9.
  • a gasket 200 consisting of sixteen divided gaskets 20a is shown.
  • the screw engaging portion 20a-2 is inclined toward the end and the screw engaging portion 20a-2
  • the fastening holes 20b-1 and the fastening holes 20 b-1 of the screw coupling part 20 b-2 overlapped with each other are arranged concentrically with each other is illustrated.
  • the diameters of the arcs formed at the ends 20a-3 and 20b-3 of the screwing portions 20a-2 and 20b-2 are made smaller than the heads 4a of the screws.
  • FIG. 5 illustrates an example in which split gaskets overlapping each other are installed at the coupling part 9, and in FIG. 6, an example in which pressure is sealed by fastening by bolt coupling is illustrated.
  • the split gaskets 10a and 10b are disposed to be adjacent to each other and are installed between the coupling parts 9a and 9b so that the bolts 4 are coupled to the coupling parts 9a and 9b and the adjacent split gaskets 10a.
  • 10b) are mounted in the fastening holes 10a-1 and 10b-1, and ends 10a-3 and 10b-3 of the split gaskets 10a and 10b are respectively heads 4a of the bolts 4a. It is placed inside. That is, the right end 10a-3 of the upper split gasket 10a overlapped between the coupling portions 9a and 9b shown is disposed on the left side of the right end of the head 4a of the bolt 4. Further, the left end 10b-3 of the lower split gasket 10b shown on the cross section is disposed on the right side of the left end of the head 4a of the bolt 4.
  • the upper split gasket 10a is spaced apart from the lower engaging portion 9b, and the lower split gasket 10b is spaced apart from the upper engaging portion 9a.
  • the end portions 10a-3 and 10b-3 of the split gaskets 10a and 10b are connected to the head 4a of the bolt 4.
  • the upper and lower coupling portions 9a and 9b are sealed by being pressurized by the divided gaskets 10a and 10b adjacent to each other and the air gap 15 of the split gasket ends 10a-3 and 10b-3 being sealed to each other. do.
  • the split gaskets 10a and 10b are formed of foam rubbers 10a-4 and 10b-4 forming upper and lower surfaces, and steel disposed between upper and lower surfaces of the foam rubbers 10a-4 and 10b-4. 10a-5, 10b-5).
  • the screw coupling portions 10a-2 and 10b-2 of the split gaskets 10a and 10b adjacent to each other at the lower portion of the bolt head 4a are brought into contact with each other, and the foam rubbers 10a-4 are in contact with each other.
  • 10b-4 preferably has a thickness thicker than the non-contacting foam rubbers 10a-4 and 10b-4. As a result, the air gap 15 is more effectively sealed in the state where the screwing portions 10a-2 and 10b-2 adjacent to each other are compressed by the bolt head 4a.
  • FIG. 7 shows the results of the sealing test using a split gasket of various forms.
  • the bending shape and the bolt pattern of the lithium ion battery pack coupling part were kept the same as before, and the lithium ion battery pack employing the split gasket of the type shown in FIG. 7 was submerged in a tank of 1 m depth. It was kept for a minute.
  • the battery pack cover was 1t thick and the bolts were tested with the M6 specification.
  • the gasket split specification was carried out with the split specification including the circular shape of the gasket in the middle part between the bolts, and water leakage evaluation resulted in leakage at the split part.
  • the gasket split specification was performed with the split gasket including the polygonal shape in the middle part between the bolts, and water leakage evaluation occurred in the split part.
  • gasket for a lithium ion battery pack has been described above with reference to the accompanying drawings.
  • the gasket for the lithium ion battery pack is not limited to the configuration and method of the embodiments described above, but the embodiments may be configured by selectively combining all or some of the embodiments so that various modifications can be made.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gasket Seals (AREA)

Abstract

La présente invention concerne un joint pour un bloc-batterie lithium-ion qui est installé entre des parties de couplage d'un bloc-batterie lithium-ion qui fixe chaque partie de couplage d'un premier et d'un deuxième logement au moyen d'une pluralité de couplages par boulons afin d'en assurer l'étanchéité, le joint étant composé d'une pluralité de joints divisés qui sont divisés et installés entre au moins une partie de la pluralité de boulons, des trous de fixation dans lesquels sont installés les boulons étant formés dans des parties de couplage à vis des deux parties d'extrémité de chacun des joints divisés, les trous de fixation étant agencés pour se superposer de sorte que les parties de couplage à vis adjacentes puissent être couplées au moyen du boulon, et la partie superposée de la partie de couplage à vis étant agencée sur un côté intérieur par rapport à un diamètre extérieur d'une partie de tête du boulon lorsque le boulon est fixé de sorte que les parties de couplage à vis respectives autour des trous de fixation superposés puissent être pressées en raison de la pression de la partie de tête du boulon.
PCT/KR2016/012785 2016-11-08 2016-11-08 Joint pour bloc-batterie lithium-ion WO2018088577A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2016/012785 WO2018088577A1 (fr) 2016-11-08 2016-11-08 Joint pour bloc-batterie lithium-ion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2016/012785 WO2018088577A1 (fr) 2016-11-08 2016-11-08 Joint pour bloc-batterie lithium-ion

Publications (1)

Publication Number Publication Date
WO2018088577A1 true WO2018088577A1 (fr) 2018-05-17

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ID=62110357

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Application Number Title Priority Date Filing Date
PCT/KR2016/012785 WO2018088577A1 (fr) 2016-11-08 2016-11-08 Joint pour bloc-batterie lithium-ion

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021051990A1 (fr) * 2019-09-17 2021-03-25 宁德时代新能源科技股份有限公司 Batterie, dispositif d'entraînement et véhicule

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001280500A (ja) * 2000-03-30 2001-10-10 Nissan Diesel Motor Co Ltd オイルパンのシール構造
KR20100034482A (ko) * 2008-09-24 2010-04-01 케이피에치이 주식회사 판형 열교환기의 개스킷
JP2012097896A (ja) * 2010-10-08 2012-05-24 Primearth Ev Energy Co Ltd ガスケットを用いたシール構造体
JP2012122536A (ja) * 2010-12-08 2012-06-28 Nok Corp ガスケット
KR101610487B1 (ko) * 2014-08-12 2016-04-07 현대자동차주식회사 전기자동차용 고전압배터리의 케이스 구조

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001280500A (ja) * 2000-03-30 2001-10-10 Nissan Diesel Motor Co Ltd オイルパンのシール構造
KR20100034482A (ko) * 2008-09-24 2010-04-01 케이피에치이 주식회사 판형 열교환기의 개스킷
JP2012097896A (ja) * 2010-10-08 2012-05-24 Primearth Ev Energy Co Ltd ガスケットを用いたシール構造体
JP2012122536A (ja) * 2010-12-08 2012-06-28 Nok Corp ガスケット
KR101610487B1 (ko) * 2014-08-12 2016-04-07 현대자동차주식회사 전기자동차용 고전압배터리의 케이스 구조

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021051990A1 (fr) * 2019-09-17 2021-03-25 宁德时代新能源科技股份有限公司 Batterie, dispositif d'entraînement et véhicule

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