WO2007034703A1 - Bloc d'elements d'accumulateur - Google Patents

Bloc d'elements d'accumulateur Download PDF

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Publication number
WO2007034703A1
WO2007034703A1 PCT/JP2006/317988 JP2006317988W WO2007034703A1 WO 2007034703 A1 WO2007034703 A1 WO 2007034703A1 JP 2006317988 W JP2006317988 W JP 2006317988W WO 2007034703 A1 WO2007034703 A1 WO 2007034703A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
insulating paper
battery cells
cells
assembled
Prior art date
Application number
PCT/JP2006/317988
Other languages
English (en)
Japanese (ja)
Inventor
Naoya Goto
Original Assignee
Sanoh Kogyo Kabushiki Kaisha
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 Sanoh Kogyo Kabushiki Kaisha filed Critical Sanoh Kogyo Kabushiki Kaisha
Publication of WO2007034703A1 publication Critical patent/WO2007034703A1/fr

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/584Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593Spacers; Insulating plates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/584Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present invention relates to an assembled battery in which insulating paper is attached to a terminal surface so that terminals and connection plates of individual battery cells constituting the assembled battery are not short-circuited via an external conductor.
  • Secondary batteries in which secondary battery cells are connected in series, are widely used in various applications including electric bicycles and hybrid vehicles. In recent years, battery capacity and density have been rapidly increasing.
  • reference number BC indicates individual battery cells constituting the assembled battery.
  • the battery cell BC starts from number 1. Connect in series in order of No.11!
  • the battery cells BC are arranged in series connection order! /, In other words, arranged in two columns, an even-numbered column and an odd-numbered column, and the odd-numbered column battery cell BC and the even-numbered column
  • the polarity of battery cell BC is upside down.
  • Fig. 9 shows that No. 2 and No. 3, No. 4 and No. 5, No. 6 and No. 7, No. 8 and No. 9, and No. 10 and No. 11 are connected using the connection terminal board 12.
  • the connection terminal board with the same number 1 and 2, 3 and 4, 5 and 6, 7 and 8, and 9 and 10 Is connected using.
  • a positive terminal plate 14a is attached to the first battery cell BC, and a negative terminal plate 14b is attached to the 11th battery cell BC.
  • the object of the present invention is to solve the problems of the prior art, and even if the electrolyte leaks from the battery cell, a voltage of 2 cells or more is applied to the insulating paper.
  • the purpose of the present invention is to provide a battery pack that can prevent smoke and fire and improve safety by not applying voltage.
  • the present invention provides an assembled battery in which a plurality of battery cells are connected, and insulates the terminal surfaces of each of the plurality of battery cells connected by a single connection plate. Insulating paper is attached, and each insulating paper is separated and independent from each other.
  • the insulating paper includes glasses-shaped insulating paper corresponding to the end face contour shape of two adjacent battery cells, and a bowl shape covering the entire terminal surfaces of two adjacent battery cells. Insulating paper can be used.
  • the terminal surface side of the assembled battery in which the battery cells are assembled is entirely insulated with insulating paper to form a bypass current path having a large resistance.
  • a plurality of slits are formed in the insulating paper.
  • the slit in the insulating paper, the slit extends along between connecting plates connecting adjacent battery cells, and a region where current flows when two or more battery cells are short-circuited is divided. It is preferable to arrange the slits so that they do.
  • the insulating paper can be reliably prevented from smoking and igniting, and the safety of the assembled battery can be improved. Enhance be able to.
  • FIG. 1 is a plan view showing insulating paper used for a battery pack according to a first embodiment of the present invention.
  • FIG. 2 is a plan view of an assembled battery to which the glasses-shaped insulating paper of FIG. 1 is applied.
  • FIG. 3 is a plan view of the assembled battery of FIG. 2 in which electrolyte leakage occurs in the battery cell.
  • FIG. 4 is a plan view showing a cell arrangement of a battery pack to which the saddle-shaped insulating paper of FIG. 1 is applied.
  • FIG. 5 is a plan view of an assembled battery to which the bowl-shaped insulating paper of FIG. 1 is applied.
  • FIG. 6 is a plan view showing insulating paper used for the assembled battery according to the second embodiment of the present invention.
  • FIG. 7 is a plan view of an assembled battery in which the insulating paper of FIG. 6 is attached to the terminal surface.
  • FIG. 8 is a plan view of the assembled battery for explaining the operation of the assembled battery of the second embodiment.
  • FIG. 9 is a plan view showing the arrangement of battery cells in the assembled battery.
  • FIG. 10 is a plan view of a conventional yarn and battery.
  • FIG. 11 is a plan view of conventional insulating paper used for the battery pack of FIG.
  • FIG. 1 shows an insulating paper used for the assembled battery according to the first embodiment of the present invention.
  • the insulating paper of the assembled battery a sheet in which two adjacent battery cells are pasted through a single connection plate is used.
  • FIG. 1 illustrates two types of insulating paper 20 and 21 having different shapes depending on the arrangement of the battery cells. Among them, the insulating paper 20 is used for the assembled battery having the cell arrangement shown in FIG. 9, and the insulating paper 21 is used for the assembled battery having the cell arrangement shown in FIG.
  • the first battery cell BC is in contact with the valley between the second and third battery cells BC
  • the third battery cell BC is One battery cell BC is always in contact with the adjacent cell and the valley of the cell, such as being in contact with the valley of the battery cell BC of No. 5.
  • the insulating paper 20 is an insulating paper having a shape of a spectacle in accordance with the feature of the arrangement of the battery cells BC.
  • the insulating paper material itself is a well-known material used for this type of battery pack. As shown in FIG. 2, the insulating paper 20 just corresponds to the end face contour shape of the two adjacent battery cells BC, whereby the insulating paper 20 is separated and independent from each other.
  • the insulating paper 21 is used for a battery pack having a cell array as shown in FIG. In this assembled battery, they are connected in series in the order of their numbers. In this cell arrangement, the polarities of cells adjacent in the width direction are reversed, and the polarities of cells adjacent in the length direction are also reversed.
  • the connection plate connects cells adjacent in the width direction. In FIG. 4, the side that appears to be V ⁇ is also connected by the connecting plate 12 in the same manner.
  • the insulating paper 21 is an insulating paper having a bowl shape.
  • the width of the insulating paper is approximately the same as the diameter of the battery cell, and both ends are semicircles having the same curvature as the cross-sectional shape of the battery cell.
  • the insulating paper 21 can cover the entire terminal surfaces of the battery cells adjacent to each other through the connection plate 12, and the insulating papers 21 are separated and independent from each other. .
  • Fig. 2 for some reason, for example, the battery cells BC # 3 and # 5 are damaged and the electrolyte leaks, and as shown in Fig. 3, the leaked electrolyte is shaded by the insulating paper 20a and 20b. It shall penetrate into the indicated range.
  • the insulation performance of the insulating papers 20a and 20b deteriorates due to the permeation of the electrolyte, and a current flows when a voltage is applied to the insulating papers 20a and 20b.
  • the insulating paper 20a, 20b infiltrated with electrolyte is short-circuited with battery cells BC of No. 2 and No. 3, or No. 4 and No. 5. I'm not letting you. Also, since the insulating papers 20a and 20b are separated and independent, they do not come into contact with each other, for example, the third and fourth battery cells BC do not short-circuit. Therefore, unlike the continuous insulation paper, the voltage of two or more battery cells BC is not applied by the permeation of the electrolyte, so it is possible to reliably prevent smoke and fire.
  • FIG. 6 shows the insulating paper 30 used for the assembled battery according to the second embodiment
  • FIG. 7 shows the finished assembled battery with the insulating paper 30 attached thereto.
  • This second embodiment differs from the first embodiment in which the adjacent cells are insulated, and is an assembled battery in which all the cells are insulated using a single sheet of insulating paper 30.
  • the cell arrangement shown in FIG. This is an example applied to a battery that has it.
  • a plurality of slits 32a to 32e are formed in order to form a bypass current path with increased resistance.
  • the positions of slits 32a to 32e correspond to the arrangement of battery cells BC, and as shown in Fig. 8, the numbers 2 and 3 and the numbers 4 and 5 Assuming that No. 6 and No. 7, No. 8 and No. 9, and No. 10 and No. 11 are connected using the connecting plate 12, the slits 32a to 32e respectively extend between the connecting plates. Is formed.
  • connection plates are used for connection, the slits are similarly formed to extend between the connection plates.
  • the slit 32b extends in the insulating paper 30 so as to divide the current flowing region, the current flows around the slit 32b as shown by an arrow. Then, since the current flows through a narrow portion having a large resistance near the end of the slit 32b, the current value is reduced by the amount of the increased resistance, and the generated Joule heat can be reduced. As a result, even if the voltage for two or more battery cells is strong, by flowing the current through the bypass current path with increased resistance, the current value can be reduced to prevent smoke and ignition. It becomes possible to suppress Joule heat.

Landscapes

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

Abstract

L'invention concerne un bloc d'éléments d'accumulateur dans lequel l'émission de fumée et l'allumage sont inhibés en vue d'améliorer la sécurité, à l'aide d'un moyen qui consiste à empêcher l'application de tensions d'au moins deux éléments sur un papier isolant y compris en cas de fuite d'électrolyte d'un élément d'accumulateur. Dans ledit bloc d'éléments d'accumulateur formé par connexion d'éléments d'accumulateur (BC), une feuille de papier isolant (20) est collée à chaque ensemble d'éléments d'accumulateur qui sont connectés par une plaque de connexion unique (12), cette feuille isolant des surfaces d'extrémité des éléments. Les feuilles de papier isolant (20) sont séparées et indépendantes les unes des autres.
PCT/JP2006/317988 2005-09-26 2006-09-11 Bloc d'elements d'accumulateur WO2007034703A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-278074 2005-09-26
JP2005278074A JP4823627B2 (ja) 2005-09-26 2005-09-26 組電池

Publications (1)

Publication Number Publication Date
WO2007034703A1 true WO2007034703A1 (fr) 2007-03-29

Family

ID=37888754

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/317988 WO2007034703A1 (fr) 2005-09-26 2006-09-11 Bloc d'elements d'accumulateur

Country Status (2)

Country Link
JP (1) JP4823627B2 (fr)
WO (1) WO2007034703A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009026598A (ja) * 2007-07-19 2009-02-05 Hitachi Vehicle Energy Ltd 二次電池パック
CN103000853A (zh) * 2011-09-08 2013-03-27 福特全球技术公司 避免接近高压的方法和装置
US11316228B2 (en) * 2015-12-25 2022-04-26 Makita Corporation Battery pack

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100924724B1 (ko) 2007-09-14 2009-11-04 에너지 컨트롤 리미티드 독립 분리형 전력 전지 조립체
JP2009230864A (ja) * 2008-03-19 2009-10-08 Panasonic Corp 電池パック
JP2011009402A (ja) * 2009-06-25 2011-01-13 Panasonic Corp 蓄電ユニット

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06223804A (ja) * 1993-01-26 1994-08-12 Matsushita Electric Works Ltd 電池パック
JPH09139195A (ja) * 1995-11-13 1997-05-27 Sanyo Electric Co Ltd 組電池
JP2003051297A (ja) * 2001-08-07 2003-02-21 Shin Kobe Electric Mach Co Ltd 組電池

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3631110B2 (ja) * 2000-06-30 2005-03-23 三洋電機株式会社 バッテリーパック
JP4284172B2 (ja) * 2001-06-13 2009-06-24 パナソニック株式会社 集合電池
JP5190356B2 (ja) * 2005-03-16 2013-04-24 フォード グローバル テクノロジーズ、リミテッド ライアビリティ カンパニー 電力供給システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06223804A (ja) * 1993-01-26 1994-08-12 Matsushita Electric Works Ltd 電池パック
JPH09139195A (ja) * 1995-11-13 1997-05-27 Sanyo Electric Co Ltd 組電池
JP2003051297A (ja) * 2001-08-07 2003-02-21 Shin Kobe Electric Mach Co Ltd 組電池

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009026598A (ja) * 2007-07-19 2009-02-05 Hitachi Vehicle Energy Ltd 二次電池パック
CN103000853A (zh) * 2011-09-08 2013-03-27 福特全球技术公司 避免接近高压的方法和装置
CN103000853B (zh) * 2011-09-08 2016-05-04 福特全球技术公司 避免接近高压的方法和装置
US11316228B2 (en) * 2015-12-25 2022-04-26 Makita Corporation Battery pack

Also Published As

Publication number Publication date
JP2007087880A (ja) 2007-04-05
JP4823627B2 (ja) 2011-11-24

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