[go: up one dir, main page]

WO2012074284A2 - Bloc batterie de taille moyenne ou grande à sécurité améliorée pour une opération d'ouverture/fermeture - Google Patents

Bloc batterie de taille moyenne ou grande à sécurité améliorée pour une opération d'ouverture/fermeture Download PDF

Info

Publication number
WO2012074284A2
WO2012074284A2 PCT/KR2011/009186 KR2011009186W WO2012074284A2 WO 2012074284 A2 WO2012074284 A2 WO 2012074284A2 KR 2011009186 W KR2011009186 W KR 2011009186W WO 2012074284 A2 WO2012074284 A2 WO 2012074284A2
Authority
WO
WIPO (PCT)
Prior art keywords
battery pack
battery
medium
opening
fastening
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/KR2011/009186
Other languages
English (en)
Korean (ko)
Other versions
WO2012074284A3 (fr
Inventor
홍영진
김경일
이대표
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.)
EIG Ltd
Original Assignee
EIG 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 EIG Ltd filed Critical EIG Ltd
Publication of WO2012074284A2 publication Critical patent/WO2012074284A2/fr
Publication of WO2012074284A3 publication Critical patent/WO2012074284A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • 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
    • 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
    • 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
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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 medium-large battery pack having improved safety when opening and closing, and more particularly, a battery including a receiving part accommodating a plurality of batteries, a cover part covering the accommodating part, and a fastening part fastening the accommodating part and the cover part.
  • the accommodating portion and the cover portion are respectively connected to the battery inner protection circuit, the connection state of the battery inner protection circuit is determined according to the fastening state of the fastening portion characterized in that the battery for improved safety when opening and closing It's about the pack.
  • Secondary batteries are energy sources for mobile devices such as mobile phones, digital cameras, PDAs, PMPs, laptops, and wireless devices, as well as power devices such as electric bicycles (EVs), electric vehicles (EVs), and hybrid electric vehicles (HEVs). Also attracts a lot of attention.
  • EVs electric bicycles
  • EVs electric vehicles
  • HEVs hybrid electric vehicles
  • the lithium secondary battery has a problem of low safety while having excellent electrical characteristics.
  • lithium secondary batteries cause decomposition reactions of battery components, such as active materials and electrolytes, under abnormal operating conditions such as overcharge, overdischarge, exposure to high temperatures, and electrical short circuits to generate heat and gas, resulting in high temperature and high pressure.
  • the condition of may further accelerate the decomposition reaction, resulting in an air ignition or explosion.
  • the lithium secondary battery includes a protection circuit that blocks current during overcharge, over discharge, and overcurrent, a PTC element (Positive Temperature Coefficient Element) that blocks current by increasing resistance when temperature rises, and a current when pressure rises due to gas generation.
  • Safety systems are provided, such as safety vents to shut off or vent the gases.
  • a PTC element and a safety vent are usually installed on an electrode assembly (power generation element) of a cathode / separator / cathode embedded in a cylindrical can, and in a rectangular or pouch type small secondary battery, Protection circuit modules and PTC elements are generally mounted on top of a rectangular can or pouch case in which the generator is sealed.
  • the safety problem of the lithium secondary battery is more serious in the medium-large battery pack of the multi-cell structure.
  • Small battery packs are packed with one battery cell for small devices such as mobile phones and cameras, while two or more battery cells (hereinafter sometimes referred to as "multi-cell") are used for medium and large devices such as notebooks and electric vehicles.
  • Multi-cell Battery cells
  • Medium or large battery packs in which battery packs connected in parallel and / or in series are packed are used.
  • FIG. 1 is a circuit schematic diagram of a conventional medium-large battery pack.
  • a battery module assembly in which a plurality of battery cells or unit modules are connected in series and arranged in a state in which a plurality of battery modules are electrically connected is built in a module case.
  • the BMS 600 that detects and controls information on an operation state of the battery module assembly 500, and the battery module assembly 500 and the external input / output circuit by an operation command of the BMS 600.
  • a power supply opening / closing unit (relay: 700) for opening and closing the connection of the inverter (800).
  • the medium and large battery packs are equipped with safety systems such as fuses, bimetals, and battery management systems (BMSs) for protecting the battery cells from over discharge, over charge, over current, and the like.
  • safety systems such as fuses, bimetals, and battery management systems (BMSs) for protecting the battery cells from over discharge, over charge, over current, and the like.
  • lithium secondary batteries are gradually deteriorated in the continuous use, that is, the continuous charging and discharging process, the power generator, electrical connection member, etc.
  • deterioration of the power generation element is caused by the decomposition of the electrode material, electrolyte, etc. Generation, and the battery cells (cans, pouch cases) gradually expand.
  • the safety system BMS detects overdischarge, overcharge, overcurrent, and the like, and controls / protects the battery pack.
  • the BMS is not operated in an abnormal situation, the risk increases and it becomes difficult to control the battery pack for safety.
  • the medium and large battery packs are provided with an opening and closing device to open the battery pack and to check the status of the individual batteries to check the status of the individual batteries separately from the circuit schematic.
  • an opening and closing device to open the battery pack and to check the status of the individual batteries to check the status of the individual batteries separately from the circuit schematic.
  • the present invention is to solve the above problems, an object of the present invention is to provide a battery pack with improved safety when opening and closing in a medium-large battery pack.
  • the present invention in order to solve the above problems, includes a receiving portion for receiving a plurality of batteries, a cover portion covering the receiving portion, and a fastening portion for fastening the receiving portion and the cover portion, the receiving portion and the cover portion
  • a receiving portion for receiving a plurality of batteries
  • a cover portion covering the receiving portion
  • a fastening portion for fastening the receiving portion and the cover portion
  • the receiving portion and the cover portion Each of the battery packs is connected to an internal protection circuit, and the battery pack for improved safety during opening and closing is characterized in that the connection state of the internal protection circuit of the battery is determined according to the fastening state of the fastening unit.
  • the fastening portion includes a fastening body which is received through the through hole of the cover portion, the receiving groove of the receiving portion and the through hole of the cover portion is received in the receiving groove of the receiving portion, and the outer peripheral surface of the through hole of the cover portion and It characterized in that it comprises a contactor connected to the inner protective circuit at the bottom of the receiving groove of the receiving portion, respectively.
  • the contact of the outer peripheral surface of the cover portion through hole and the receiving groove bottom contactor of the receiving portion Is connected to connect the internal protection circuit.
  • the fastener is characterized in that any one of the bolt (Bolt) form, Hook (hook) form or screw form.
  • the battery pack according to the present invention when the user of the battery pack arbitrarily separates or disassembles the battery pack, or when the accommodating part and the cover part of the battery pack are separated by the expansion of the internal battery, the internal circuit of the battery connected thereto is spontaneously shorted. The effect of improving the safety of the battery is shown.
  • FIG. 1 is a circuit schematic diagram of a conventional medium-large battery pack.
  • FIG. 2 is a circuit schematic diagram of a medium-large battery pack according to the present invention.
  • FIG. 3 is a view showing the opening and closing portion of the medium-large battery pack according to an embodiment of the present invention.
  • Figure 4 is a cross-sectional view showing a state in which the fastener of the opening and closing portion of the medium-large battery pack according to an embodiment of the present invention is not fastened.
  • FIG. 5 is a view showing a state in which the fastener of the opening and closing portion of the medium-large battery pack according to an embodiment of the present invention is fastened.
  • FIG. 6 is a view showing a state in which the fastener of the opening and closing portion of the medium-large battery pack according to another embodiment of the present invention is fastened.
  • the medium-large battery pack 90 of the present invention is a battery module assembly 50, a plurality of battery cells or unit modules are arranged in an electrically connected state in the operating state of the battery module assembly 50
  • an accommodating part (not shown) accommodating the plurality of battery cells or unit modules, a lid part covering the accommodating part (not shown), and a fastening part 100 connected to each.
  • the internal protection circuit is connected when the accommodating part and the cover part are fastened at the fastening part, and when the accommodating part and the cover part are separated or dissociated from the fastening part, the internal protection circuit is provided.
  • the entire circuit is shorted to block the flow of current inside the battery to ensure the safety of the entire battery.
  • FIG 3 is a perspective view of a fastening part according to an embodiment of the present invention.
  • the fastening part is fastened to be accommodated as a receiving groove through the through hole 130 of the cover part 120, a receiving groove (not shown) of the receiving part 110, and a through hole of the cover part.
  • a sieve 150 is included, and the through hole of the cover part includes contactors 132a and 132b connected to the battery internal circuit on an outer circumferential surface thereof.
  • FIG. 4 is a cross-sectional view A-A of the fastening part 150 of FIG. 3 when the fastener is not fastened to the receiving groove
  • FIG. 5 is a cross-sectional view of the fastener when the fastener is fastened to the receiving groove.
  • the fastening part penetrates the through hole 130 of the cover part 120, the accommodation groove 140 of the accommodation part 110, and the through hole of the cover part to the accommodation groove of the accommodation part. It includes a fastener 150 is accommodated, the outer peripheral surface of the through hole of the cover portion and the bottom of the receiving groove of the accommodating portion includes a contact (132a, 132b, 140) connected to the internal circuit of the battery, respectively.
  • the contactors 132a and 132b of the outer circumferential surface of the through hole of the cover part and the contactor 140 of the bottom part of the accommodation groove of the accommodating part are connected to each other.
  • the contacts 132a, 132b, 140 connected to the internal circuit are not connected to each other, and the internal circuit is short-circuited.
  • the fastener according to the present invention is not particularly limited as long as it can connect the contactors 132a and 132b of the outer circumferential surface of the through hole and the contactor of the bottom portion of the accommodation groove of the accommodating part, and have a bolt shape and a hook shape. Or screw type is available.
  • FIG. 6 shows a cross section of another fastening portion according to another embodiment of the present invention.
  • the fastener is configured in a bolt shape that is fastened to the fastening groove in a clamping manner.
  • the contacts 132a 'and 132b' of the outer circumferential surface of the through hole of the cover part and the contactor 140 'of the bottom of the receiving groove of the accommodating part are fasteners.
  • the contacts 132a ', 132b', and 140 'connected to the internal circuit are not connected to each other.
  • the circuit will be shorted. That is, the contacts 132a 'and 132b' of the outer circumferential surface of the through hole of the cover part and the contacts 140 'of the bottom part of the receiving groove of the accommodating part may be dissociated due to intentional or natural separation of the battery pack or other reasons. In this case, the connection will be disconnected, resulting in a short circuit to the internal circuit connected to it.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

La présente invention concerne un bloc batterie de taille moyenne ou grande à sécurité améliorée pour une opération d'ouverture/fermeture. Plus particulièrement, la présente invention concerne un bloc batterie de taille moyenne ou grande pour une batterie de taille moyenne ou grande à sécurité améliorée d'ouverture/fermeture. Ledit bloc batterie comprend : une unité logement qui loge une pluralité de batteries ; une unité couvercle qui recouvre l'unité logement ; et une unité accouplement qui accouple l'unité logement et l'unité couvercle. L'unité logement et l'unité couvercle sont reliées aux circuits respectifs de protection d'intérieur de batterie, et les états de connexion des circuits de protection d'intérieur de batterie sont déterminés par l'état d'accouplement de l'unité accouplement.
PCT/KR2011/009186 2010-11-30 2011-11-30 Bloc batterie de taille moyenne ou grande à sécurité améliorée pour une opération d'ouverture/fermeture Ceased WO2012074284A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0120421 2010-11-30
KR1020100120421A KR101230868B1 (ko) 2010-11-30 2010-11-30 개폐시 안전성이 향상된 중대형 전지팩

Publications (2)

Publication Number Publication Date
WO2012074284A2 true WO2012074284A2 (fr) 2012-06-07
WO2012074284A3 WO2012074284A3 (fr) 2012-10-04

Family

ID=46172394

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/009186 Ceased WO2012074284A2 (fr) 2010-11-30 2011-11-30 Bloc batterie de taille moyenne ou grande à sécurité améliorée pour une opération d'ouverture/fermeture

Country Status (2)

Country Link
KR (1) KR101230868B1 (fr)
WO (1) WO2012074284A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005216512A (ja) 2004-01-27 2005-08-11 Tokai Rika Co Ltd 電池、電池ホルダ及び電池の取付構造
KR100670515B1 (ko) * 2005-07-06 2007-01-16 삼성에스디아이 주식회사 캡 조립체와 이를 구비하는 리튬이온 이차전지
KR20090030711A (ko) * 2007-09-20 2009-03-25 삼성에스디아이 주식회사 베어 셀 및 이를 포함한 이차 전지
KR101130050B1 (ko) * 2007-11-21 2012-03-28 주식회사 엘지화학 안전성이 향상된 중대형 전지팩
CN101626067B (zh) * 2008-07-10 2013-01-16 深圳市比克电池有限公司 一种电芯极耳与盖板的连接结构

Also Published As

Publication number Publication date
KR101230868B1 (ko) 2013-02-13
KR20120058897A (ko) 2012-06-08
WO2012074284A3 (fr) 2012-10-04

Similar Documents

Publication Publication Date Title
KR101336064B1 (ko) 안전성이 향상된 전지팩
KR100914839B1 (ko) 안전성이 향상된 전지모듈 및 이를 포함하는 중대형 전지팩
KR101383167B1 (ko) 안전성이 향상된 전지팩
KR101404712B1 (ko) 안전성이 향상된 전지팩
KR100903185B1 (ko) 향상된 안전성의 개선된 중대형 전지팩
WO2013111960A1 (fr) Module de batterie à sécurité améliorée et bloc batterie le comprenant
KR101169205B1 (ko) 안전성이 향상된 중대형 전지팩
WO2013015524A1 (fr) Bloc-batterie à sécurité améliorée
KR101130050B1 (ko) 안전성이 향상된 중대형 전지팩
KR100881641B1 (ko) 안전 시스템을 구비한 중대형 전지팩
KR20100081942A (ko) 신규한 구조의 전지모듈 및 이를 포함하는 중대형 전지팩
WO2019009625A1 (fr) Module de batterie et bloc-batterie, et véhicule les comprenant
KR20150034498A (ko) 벤팅 커버를 구비하는 배터리 셀 및 이를 포함하는 이차전지
WO2017039139A1 (fr) Bloc-batterie
KR20150116269A (ko) 이차 전지용 보호 장치
KR101230868B1 (ko) 개폐시 안전성이 향상된 중대형 전지팩
WO2012169793A2 (fr) Dispositif de sécurité de bloc-pile
KR20120056812A (ko) 안전성이 향상된 중대형 전지팩
EP4496090A2 (fr) Bloc-batterie
KR20250127863A (ko) 배터리모듈
KR20250085501A (ko) 배터리 모듈, 배터리 모듈의 측면 커버 및 측면 커버 제조 방법
KR20250079427A (ko) 배터리 팩
KR20250086075A (ko) 이차전지 및 이를 포함하는 배터리 팩
KR20250137231A (ko) 이차전지 및 이를 포함하는 이차전지 모듈

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11844313

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11844313

Country of ref document: EP

Kind code of ref document: A2