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WO2014003373A1 - Support de batterie pour batterie rechargeable - Google Patents

Support de batterie pour batterie rechargeable Download PDF

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Publication number
WO2014003373A1
WO2014003373A1 PCT/KR2013/005514 KR2013005514W WO2014003373A1 WO 2014003373 A1 WO2014003373 A1 WO 2014003373A1 KR 2013005514 W KR2013005514 W KR 2013005514W WO 2014003373 A1 WO2014003373 A1 WO 2014003373A1
Authority
WO
WIPO (PCT)
Prior art keywords
pcb
sealing member
upper case
battery
battery module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2013/005514
Other languages
English (en)
Korean (ko)
Inventor
김덕수
권대원
차현기
박성철
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.)
SK Innovation Co Ltd
Original Assignee
SK Innovation Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SK Innovation Co Ltd filed Critical SK Innovation Co Ltd
Publication of WO2014003373A1 publication Critical patent/WO2014003373A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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 battery module for a secondary battery, and more particularly, to a battery module for a secondary battery that can maintain airtightness by being sealed to the outside through a sealed structure.
  • secondary batteries are rechargeable and have a large capacity, such as nickel cadmium, nickel hydrogen, and lithium ion batteries.
  • the lithium ion battery has attracted attention as a next generation power source due to its excellent characteristics such as long life and high capacity.
  • lithium secondary batteries are used as power sources for portable electronic devices with an operating voltage of 3.6 V or more, or used in high-power hybrid cars by connecting several in series. Compared with the three times higher operating voltage and excellent energy density per unit weight, the use is increasing rapidly.
  • the lithium secondary battery may be manufactured in various forms, and typical shapes include cylindrical and prismatic types that are mainly used in lithium ion batteries.
  • Lithium polymer batteries which are in the spotlight in recent years, have been manufactured in a flexible pouched type, and their shapes are relatively free.
  • the lithium polymer battery is excellent in safety and light in weight, which is advantageous for slimmer and lighter portable electronic devices.
  • the pouch type battery cell may be implemented in the form of a battery module in which a plurality of battery cells are stacked and connected in series or in parallel.
  • the battery module has a structure in which a battery cell is enclosed through a case made of a material such as aluminum to protect a plurality of stacked battery cells from the outside.
  • a case for covering a plurality of battery cells is not completely sealed, and harmful gases generated from the battery cells are leaked to the outside of the battery module and the user is exposed to harmful gases. There was a problem that can be supplied and fired.
  • an object of the present invention is to provide a battery module for secondary batteries with high stability through a double sealed structure of the battery module.
  • a plurality of battery cells are stacked, and a positive electrode tab and a negative electrode tab of each of the battery cells are electrically connected to a positive electrode tab and a negative electrode tab of a neighboring battery cell.
  • a lower case which is open and seats the battery cell;
  • An upper case sealing an open surface of the lower case;
  • a first sealing member provided in close contact with the coupling surface of the lower case and the upper case;
  • a second sealing member applied around a coupling surface of the lower case and the upper case.
  • the first sealing member is integrated into the lower case by a double injection, and the upper surface of the lower case, the second sealing groove to which the second sealing member is applied, downward along the outer circumference of the coupling surface It is recessed.
  • the battery module further includes a PCB, the upper case, a PCB space for the installation of the PCB is formed through, the third sealing member is in close contact with the coupling surface of the PCB and the upper case.
  • the third sealing member is formed integrally on the PCB by double injection, the PCB, the fourth sealing member is applied around the coupling surface of the PCB and the upper case; Further comprising, the fourth sealing member is applied to the outer periphery of the third sealing member.
  • the battery module the upper case coupling groove recessed downward along the upper periphery of the PCB; A PCB coupling protrusion protruding downward along the circumference of the PCB space of the upper case; It includes, wherein the third sealing member is formed by double injection into the upper case coupling groove, the fourth sealing member is applied to the outer side of the PCB coupling projection coupled to the upper case coupling groove.
  • the width of the PCB coupling groove is formed wider than the width of the PCB coupling projection so that the fourth sealing member is applied on the upper case coupling groove.
  • the secondary battery battery module of the present invention having the configuration as described above has an effect of preventing the user from being exposed to harmful gases by preventing the external leakage of internal harmful gases. In addition, by preventing the inflow of air, especially oxygen into the battery, there is an effect of preventing the ignition inside the battery module when the battery cell overheats.
  • FIG. 1 is a perspective view of a battery module of an embodiment of the present invention
  • Figure 2 is an exploded perspective view of a battery module of an embodiment of the present invention
  • FIG. 3 is a perspective view of a battery cell and a cooling member of an embodiment of the present invention.
  • FIG. 4 is an exploded perspective view of a battery cell and a cooling member of an embodiment of the present invention
  • FIG. 5 is a cross-sectional view taken along line AA ′ of FIG. 1.
  • FIG. 6 is a cross-sectional view taken along line BB ′ of FIG. 1.
  • cooling member 210 cooling pad
  • cooling fin 221 side sealing groove
  • PCB space 326 PCB coupling protrusion
  • a plurality of battery cells 100 in which a positive electrode tab and a negative electrode tab are exposed are stacked, and a positive electrode tab of the battery cell 100 is provided.
  • the negative electrode tab is electrically connected to the positive electrode tab and the negative electrode tab of the neighboring battery cell 100.
  • the plurality of battery cells 100 are connected in series or in parallel according to the use of the secondary battery.
  • cooling member 200 is interposed at the interface of the plurality of battery cells 100 are stacked, and emits heat generated from the battery cell 100 to the outside.
  • the cooling member 200 is composed of a cooling pad 210 and a cooling fin 220, the cooling pad 210 is in close contact with the interface of the battery cell 100 to absorb the heat generated from the battery cell 100 to cool Transfer to the fin 220, the cooling fin 220 is formed to extend to the outside of the side of the cooling pad 210 to release heat to the outside of the battery module (10).
  • the battery module 10 is a battery cell 100 interposed between the plurality of cooling member 200 and the cooling member 200 is located in the case 300, sealed It is characterized by.
  • the cooling fins 220 extending outward from the side of the cooling pad 210 may be disposed to be exposed to the outside of the case 300, and may be cooled by air cooling with external air.
  • the battery module 10 according to an embodiment of the present invention is described and shown that the cooling member 200 is cooled by air cooling, but the cooling method of the cooling member 200 is not limited to the air cooling method through a fluid. Obviously, water cooling to cool the cooling member 200 may be applied.
  • the case 300 includes a lower case 310, an upper case 320, and a PCB cover 330.
  • the lower case 310 is formed on an enclosure in which an upper portion of the lower case 310 is opened to accommodate the battery cells 100 and the cooling members 200 that are stacked in plurality.
  • the lower case 310 accommodates the battery cell 100 and the cooling pad 210, the cooling fin 220 is open on both sides so as to be exposed to the outside.
  • the upper case 320 is configured to seal the upper portion of the lower case 310, the PCB space (PCB) 400 is provided so that the PCB (Printed Circuit Board, 400) provided in the electrode tab forming portion of the battery cell 100 is stacked ( 325 is formed.
  • the PCB cover 330 is configured to seal the PCB space 325.
  • side sealing grooves 221 are formed on one surface and the other surface of the cooling member 200.
  • the side sealing grooves 221 are formed in the vertical direction along the interface between the cooling pad 210 and the cooling fin 220.
  • a side sealing groove 221 ′ corresponding to the side sealing groove 221 may be formed on the other surface of the cooling member 200 adjacent to one surface of the cooling member 200.
  • the side sealing member 230 is inserted into the side sealing groove 221 and the neighboring side sealing groove 221 'to connect the side sealing groove 221 and the neighboring side sealing groove 221' and at the same time the battery cell. Both sides of the (100) are sealed from the outside. Therefore, the harmful gas generated from the battery cell 100 is prevented from being discharged to both sides, and external oxygen is prevented from flowing into the battery cell 100.
  • a first sealing groove 311 in which the first sealing member S1 is seated is formed on the lower case 310.
  • the first sealing groove 311 may be formed on a coupling surface of the lower case 310 and the cooling fin 220 and the lower case 310 and the upper case 320. Accordingly, the first sealing member S1 is seated in the first sealing groove 311, and thus the lower case 310, the cooling fin 220, the lower case 310 and the upper case 320 are disposed through the first sealing member S1.
  • a sealing groove 323 may be recessed upward in the lower surface of the upper case 320 that the first sealing member S1 abuts. As the sealing area in which the first sealing member S1 is in close contact with the sealing groove 323 is widened, the sealing effect may be doubled.
  • the first sealing member S1 and the lower case 310 may be formed by double injection.
  • the double injection is a method of injecting two different resins, and when manufacturing the lower case 310 in the present invention, after producing the lower case 310 of high hardness, the first sealing member (S1) of low hardness It says how to produce by injection.
  • the battery module 10 having the configuration described above, the cooling fins in the side sealing member 230 and the lower case 310 located between the cooling fins 220 of the cooling member 200. Due to the first sealing member S1 formed in contact with the 220, the harmful gas is prevented from leaking to both sides of the battery cell 100, and the lower case 310 and the upper case 320 are formed in contact with each other. Hazardous gas may be prevented from flowing out to the place where the upper case 320 and the lower case 310 are in contact with each other through the first sealing member S1.
  • the first sealing member (S1) is made of a material having elasticity of the rubber material is sealed when the cooling fin 220 and the upper case 320 is in close contact with the first sealing member (S1) to the inside of the case 300 Is preferably sealed.
  • a second sealing groove 312 on which the second sealing member S2 is seated is formed on the lower case 310.
  • the second sealing groove 312 is formed on the coupling surface of the lower case 310 and the cooling fin 220 and the lower case 310 and the upper case 320, to be formed outside the first sealing groove 311 Can be.
  • the circumferential surface of the upper case 320 and the lower case 310 and the circumferential surface of the cooling fin 220 and the lower case 310 are formed to seal. Therefore, the second sealing member S2 is applied to the second sealing groove 312 in a state where the upper case 320 and the lower case 310 are coupled to seal the upper case 320 and the lower case 310.
  • the second sealing member S2 may be coated and cured to apply a conventional silicon material capable of sealing the upper case 320 and the lower case 310.
  • the second sealing member S2 is applied to the second sealing groove 312 so that the lower case 310, the cooling fin 220, the lower case 310 and the upper case 320 are disposed through the second sealing member S2. ) More tightly sealed. In particular, the oxygen flowing into the battery cell 100 from the outside through the second sealing member (S2) can be blocked.
  • the PCB 400 is connected to an electrode tab of the battery cell 100 by a printed circuit board, and manages and collects voltage and various information of the battery module 10.
  • the third sealing member S3 is formed at the portion where the PCB 400 and the upper case 320 contact, and the harmful gas is exposed to the open portion. Can be prevented.
  • the PCB 400 has an upper case coupling groove 410 for coupling the upper case 320 and seating the third sealing member S3.
  • the PCB 400 includes a main board 400a and a frame board 400b formed around the main board 400a for fixing and installing the main board 400a.
  • the upper case coupling groove 410 is recessed downward from the upper surface of the frame substrate 400b.
  • the upper case coupling groove 410 extends inwardly around the PCB space 325, and the PCB coupling protrusion 326 of the upper case 320 extending downward from the inner end extending therein is inserted into the PCB 400 and the upper case. 320 is coupled.
  • the PCB 400 and the upper case 320 are hermetically coupled through the third sealing member S3 seated in the upper case coupling groove 410.
  • the third sealing member S3 and the upper case 320 may be formed by double injection.
  • the double injection is a method of injecting two different resins, and when manufacturing the upper case 320 in the present invention, after producing the upper case 320 with high hardness, the third sealing member (S3) with low hardness It says how to produce by injection.
  • the PCB cover 330 may be provided to prevent the PCB 400 from being damaged by an external impact.
  • the third sealing member S3 is made of a material having elasticity of rubber to seal the PCB 400 and the upper case 320 when the third sealing member S3 is in close contact with the third sealing member S3. Is preferably sealed.
  • the frame substrate 400b is further formed with a space for applying the fourth sealing member (S4).
  • the width of the upper case coupling groove 410 may be wider than the width of the PCB coupling protrusion 326. Therefore, the PCB coupling protrusion 326 is coupled to the outer side of the upper case coupling groove 410 and the fourth sealing member S4 is applied to the inner side of the upper case coupling groove 410. Therefore, the fourth sealing member S4 is applied to the upper case coupling groove 410 while the upper case 320 and the lower case 310 are coupled to seal the PCB 400 and the upper case 320.
  • the fourth sealing member S4 may be coated and cured to apply a conventional silicon material capable of sealing the PCB 400 and the upper case 320.
  • the fourth sealing member S4 is applied to the upper case coupling groove 410 to further tightly seal the PCB 400 and the upper case 320 through the fourth sealing member S4. In particular, oxygen flowing into the battery cell 100 from the outside through the fourth sealing member S2 may be blocked.
  • the case 300 is accumulated as a harmful gas inside the case 300 may be expanded and may cause a problem in stability.
  • the gas pipe hole 322 is formed in the upper case 320, the gas pipe 321 is inserted into the gas pipe hole 322 to move the harmful gas through a gas pipe 321 to a specific section.
  • the case 300 may be prevented from expanding.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)
PCT/KR2013/005514 2012-06-25 2013-06-21 Support de batterie pour batterie rechargeable Ceased WO2014003373A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120067947A KR20140000770A (ko) 2012-06-25 2012-06-25 이차 전지용 배터리 모듈
KR10-2012-0067947 2012-06-25

Publications (1)

Publication Number Publication Date
WO2014003373A1 true WO2014003373A1 (fr) 2014-01-03

Family

ID=49783459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2013/005514 Ceased WO2014003373A1 (fr) 2012-06-25 2013-06-21 Support de batterie pour batterie rechargeable

Country Status (2)

Country Link
KR (1) KR20140000770A (fr)
WO (1) WO2014003373A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119253165A (zh) * 2024-09-09 2025-01-03 宜春国轩电池有限公司 一种降低封口焊爆点的密封焊接结构及其密封方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150115250A (ko) 2014-04-03 2015-10-14 주식회사 엘지화학 내부 텐션-바를 포함하는 배터리 팩
KR102289582B1 (ko) * 2014-12-30 2021-08-13 에이치엘그린파워 주식회사 밀봉 구조의 배터리 하우징 및 이를 이용한 배터리 모듈의 제조 방법
KR102277562B1 (ko) * 2014-12-30 2021-07-14 에이치엘그린파워 주식회사 밀봉 구조를 갖는 배터리 팩 및 이의 제조 방법
KR102471222B1 (ko) * 2016-04-08 2022-11-28 엘에스머트리얼즈 주식회사 울트라 캐패시터 모듈 및 인쇄회로기판 모듈
KR102201333B1 (ko) * 2017-08-18 2021-01-11 주식회사 엘지화학 내부 텐션-바를 포함하는 배터리 팩
KR102050025B1 (ko) * 2017-09-04 2020-01-08 주식회사 엘지화학 냉각수 직접 접촉 냉각 방식의 배터리 팩
KR102441019B1 (ko) * 2018-03-08 2022-09-05 주식회사 엘지에너지솔루션 외부 단락 방지 구조가 적용된 배터리 모듈
KR20240019648A (ko) * 2022-08-04 2024-02-14 주식회사 엘지에너지솔루션 전지팩

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000030675A (ja) * 1998-07-14 2000-01-28 Hitachi Ltd 二次電池
US20090142661A1 (en) * 2007-12-03 2009-06-04 Byd Company Limited Battery Cover
US20110052940A1 (en) * 2009-08-25 2011-03-03 Samsung Sdi Co., Ltd. Secondary battery
KR20110082346A (ko) * 2010-01-11 2011-07-19 삼성에스디아이 주식회사 이차전지
KR20110131541A (ko) * 2010-05-31 2011-12-07 삼성에스디아이 주식회사 이차전지 케이스 및이를 구비한 이차전지

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000030675A (ja) * 1998-07-14 2000-01-28 Hitachi Ltd 二次電池
US20090142661A1 (en) * 2007-12-03 2009-06-04 Byd Company Limited Battery Cover
US20110052940A1 (en) * 2009-08-25 2011-03-03 Samsung Sdi Co., Ltd. Secondary battery
KR20110082346A (ko) * 2010-01-11 2011-07-19 삼성에스디아이 주식회사 이차전지
KR20110131541A (ko) * 2010-05-31 2011-12-07 삼성에스디아이 주식회사 이차전지 케이스 및이를 구비한 이차전지

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119253165A (zh) * 2024-09-09 2025-01-03 宜春国轩电池有限公司 一种降低封口焊爆点的密封焊接结构及其密封方法

Also Published As

Publication number Publication date
KR20140000770A (ko) 2014-01-06

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