US20060117701A1 - Battery and battery pack - Google Patents

Battery and battery pack Download PDF

Info

Publication number
US20060117701A1
US20060117701A1 US11/285,444 US28544405A US2006117701A1 US 20060117701 A1 US20060117701 A1 US 20060117701A1 US 28544405 A US28544405 A US 28544405A US 2006117701 A1 US2006117701 A1 US 2006117701A1
Authority
US
United States
Prior art keywords
sheathing
sealing cap
insulating plate
battery
bottom face
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.)
Abandoned
Application number
US11/285,444
Other languages
English (en)
Inventor
Hideki Kajimura
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Assigned to NEC CORPORATION reassignment NEC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAJIMURA, HIDEKI
Publication of US20060117701A1 publication Critical patent/US20060117701A1/en
Abandoned 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
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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 and a battery pack and more particularly to the battery and battery pack being excellent in durability, in safety for a user and in impact resistance.
  • a battery serving as a power source of the portable terminal device requires high durability, safety and impact resistance.
  • FIG. 6 is a diagram showing configurations of an insulating plate 12 to be used in a conventional battery.
  • the battery is housed in a resin case and mounted as a “battery pack” in a portable terminal device.
  • FIG. 7A shows main components of the conventional battery.
  • an electrode-rolled body moves little by little and is pressed to a side of a sealing cap 7 .
  • a peripheral rib 13 and reinforcing ribs 14 used to prevent deformation of the insulating plate 12 . If the electrode-rolled body is pressed strongly, the insulating plate 12 is also pressed and deformed, causing the electrode-rolled body to come into full contact with the sealing cap 7 .
  • the relief valve 9 is pressed from the inside by pressure of gas in the space 19 and the relief valve 9 acts to cause the liquid electrolyte to leak outside of the case.
  • a purpose of the invention disclosed in the Japanese Patent Application Laid-open No. 2000-277081 is to prevent a thin film blocking a gas discharging port from getting ripped, in which no measures are taken against the shock acting on the insulating plate that separates a sealing cap from a power generating unit. Therefore, in the disclosed technology, when a shock force acts on an insulating plate, even if the thin film to block the gas discharging port does not get ripped, there is a possibility that the insulating plate is broken, thus causing the battery not to function.
  • a battery including:
  • a sheathing can housing an electrode immersed in a liquid electrolyte
  • a sealing cap to block an aperture formed on one end face of the sheathing can
  • a relief valve mounted on the sealing cap to discharge gas inside of the sheathing can when an internal pressure in the sheathing can exceeds a predetermined pressure
  • the insulating plate includes a bottom face, a peripheral rib approximately surrounding a peripheral portion of the bottom face and at least one reinforcing rib mounted on the bottom face in such a manner that the bottom is partitioned by the at least one reinforcing rib, and has a plurality of divided regions defined by at least one part of the peripheral rib and the at least one reinforcing rib, and wherein a notch is formed on at least one portion of at least one part of the peripheral rib and the at least one reinforcing rib surrounding the region located immediately below the relief valve.
  • a preferable mode is one wherein an air ventilating opening is formed on the bottom face of the insulating plate in a region located immediately below the relief valve.
  • sheathing can includes an approximately cubic container with a closed bottom end.
  • sheathing can includes an approximately cylindrical container with a closed bottom end.
  • a battery including:
  • a sheathing can housing an electrode immersed in a liquid electrolyte
  • a sealing cap to block an aperture formed on one end face of the sheathing can
  • the insulating plate includes a bottom face, a peripheral rib approximately surrounding a peripheral portion of the bottom face and at least one reinforcing rib mounted on the bottom face, in such a manner that the bottom is not partitioned into a plurality of regions by the at least one reinforcing rib.
  • a preferable mode is one wherein an air ventilating opening is formed on the bottom face of the insulating plate and below the relief valve.
  • a battery including:
  • a sheathing can housing an electrode immersed in a liquid electrolyte
  • a sealing cap to block an aperture formed on one end face of the sheathing can
  • the insulating plate includes a bottom face, a peripheral rib approximately surrounding a peripheral portion of the bottom face and a plurality of reinforcing ribs are formed on the bottom face in a meandering manner.
  • a battery pack housing at least one battery
  • the battery includes:
  • a sheathing can housing an electrode immersed in a liquid electrolyte
  • a sealing cap to block an aperture formed on one end face of the sheathing can
  • a relief valve mounted on the sealing cap to discharge gas inside of the sheathing can when an internal pressure in the sheathing can exceeds a predetermined pressure
  • the insulating plate includes a bottom face, a peripheral rib approximately surrounding a peripheral portion of the bottom face and at least one reinforcing rib mounted on the bottom face in such a manner that the bottom is partitioned by the at least one reinforcing rib, and has a plurality of divided regions defined by at least one part of the peripheral rib and the at least one reinforcing rib, and wherein a notch is formed on at least one portion of at least one part of the peripheral rib and the at least one reinforcing rib surrounding the region located immediately below the relief valve.
  • a battery pack housing at least one battery
  • the battery includes:
  • a sealing cap to block an aperture formed on one end face of the sheathing can
  • the insulating plate includes a bottom face, a peripheral rib approximately surrounding a peripheral portion of the bottom face and at least one reinforcing rib mounted on the bottom face, in such a manner that the bottom is not partitioned into a plurality of regions by the at least one reinforcing rib.
  • a battery pack housing at least one battery
  • the battery includes:
  • a sheathing can housing an electrode immersed in a liquid electrolyte
  • a sealing cap to block an aperture formed on one end face of the sheathing can
  • the insulating plate includes a bottom face, a peripheral rib approximately surrounding a peripheral portion of the bottom face and a plurality of reinforcing ribs are formed on the bottom face in a meandering manner.
  • FIG. 1 is a diagram showing configurations of a battery according to a first embodiment of the present invention
  • FIG. 2 is a diagram showing configurations of an insulating plate making up the battery according to the first embodiment
  • FIG. 3A is a diagram showing a state in which no shock force has acted on the battery and FIG. 3B is a diagram showing a state in which a shock force has acted on the battery according to the first embodiment of the present invention
  • FIG. 4 is a diagram showing the state in which the shock force has acted on the battery according to the first embodiment of the present invention
  • FIG. 5 is a diagram showing configurations of an insulating plate making up a battery according to a second embodiment of the present invention.
  • FIG. 6 is a diagram showing configurations of an insulating plate used in a conventional battery
  • FIG. 7A is a diagram showing a state of space located immediately below a relief valve before a shock acts on the conventional battery
  • FIG. 7B is a diagram showing a state of the space located immediately below the relief valve after the shock has acted, in which the space is put into a closed state
  • FIG. 1 is a diagram showing configurations of a battery 1 according to a first embodiment of the present invention.
  • the battery 1 includes a sheathing can 2 , an electrode-rolled body 3 , a negative current collecting tab 4 , a positive current collecting tab 5 , a liquid electrolyte 6 , a sealing cap 7 , and an insulating plate 12 a.
  • the sheathing can 2 is made of metal such as aluminum and has watertightness to prevent the sealed-in liquid electrolyte 6 from leaking.
  • the electrode-rolled body 3 is obtained by winding a negative electrode and positive electrode with a separator (not shown) being interposed between the negative and positive electrode and by crushing the wound electrodes to form a flat shape.
  • the negative current collecting tab 4 is a conductor drawn from a terminal of a negative electrode 8 making up the electrode-rolled body 3 and the positive current collecting tab 5 is a conductor drawn from a terminal of the positive electrode making up the electrode-rolled body 3 .
  • the liquid electrolyte 6 is a liquid containing an ion of lithium or a like.
  • the sealing cap 7 is a cap member to block an aperture formed on one terminal face of the sheathing can 2 .
  • the negative electrode 8 In the sealing cap 7 are mounted the negative electrode 8 , a relief valve 9 , an injection port 10 , and sealing pin 11 .
  • the negative electrode 8 is mounted in an approximately central portion of an aperture of the sheathing can 2 .
  • the relief valve 9 is used to lower pressure inside of the sheathing can 2 of the battery 1 when it builds up abnormally due to abnormal environments and/or a stress from the outside.
  • the injection port 10 is a port through which the liquid electrolyte 6 is injected after the sheathing can 2 has been put into a hermetically sealed state.
  • the sealing pin 11 is a member to block the injection port 10 after the liquid electrolyte 6 has been injected.
  • the insulating plate 12 a is placed so that the electrode-rolled body 3 is electrically separated from the sealing cap 7 .
  • the insulating plate 12 a also serves as a spacer to keep the electrode-rolled body 3 and sealing cap 7 at a constant distance.
  • FIG. 2 is a diagram showing configurations of the insulating plate 12 a making up the battery 1 according to the first embodiment.
  • the insulating plate 12 a includes a peripheral rib 13 a , a plurality of reinforcing ribs 14 a , and a negative electrode tab through-hole 15 .
  • Each of the reinforcing ribs 14 a mounted in a region located immediately below the relief valve 9 has a plurality of slits 16 and on the bottom face 17 a of the insulating plate 12 a is formed air vents 18 .
  • To the peripheral rib 13 a is formed a peripheral slit 13 b so that space 19 formed in a region located immediately below the relief valve 9 is not put into a sealed state.
  • the peripheral rib 13 a is larger in size than a conventional reinforcing rib 14 a ( FIG. 6 ).
  • FIG. 3 shows configurations of the main component (portion “C” surrounded by a circle in FIG. 1 ) of the battery 1 .
  • the electrode-rolled body 3 and the sealing cap 7 are kept by the insulating plate 12 a at a constant distance.
  • the insulating plate 12 a If a force exceeding stiffness of the insulating plate 12 a acts on the battery 1 when the electrode-rolled body 3 is pressed, the insulating plate 12 a is pressed and deformed, causing the electrode-rolled body 3 to be fully contacted with the sealing cap 7 .
  • the insulating plate 12 a is deformed as shown in FIG. 3B , the liquid electrolyte 6 flows, in a rounding manner, into a clearance 20 .
  • the reinforcing ribs 14 a mounted in a region located immediately below the relief valve 9 has the slits 16 and the air vents 18 are formed on the bottom face 17 a of the insulating plate 12 a .
  • the peripheral rib 13 a has a peripheral slit 13 b .
  • the battery 1 according the first embodiment being housed in a resin case, durability and impact resistance are improved.
  • FIG. 5 is a diagram showing configurations of an insulating plate to be used in a battery according to a second embodiment of the present invention.
  • a plurality of boss-shaped ribs 14 b is mounted on an insulating plate 12 b .
  • the insulating plate 12 b is so configured that the boss-shaped ribs 14 b come into contact with a peripheral rib 13 c at one place at the most.
  • the boss-shaped ribs 14 b are so configured as not to partition a bottom face 17 b of the insulating plate 12 b .
  • a meander-like space 19 is formed between the bottom of the insulating plate 12 b and a sealing cap 7 .
  • the air vent 18 is formed partially at the bottom face 17 b of the insulating plate 12 b and a peripheral slit 13 d is formed on the peripheral rib 13 c and, therefore, even if the insulating plate 12 b comes into full contact with the sealing cap 7 , the space 19 is not put into a closing state, thus making it possible to activate a relief valve 9 in order to prevent leaking of the liquid electrolyte 6 .
  • the sheathing can is made up of an approximately cubic box body with a closed bottom end, however, the can may be made up of an approximately cylindrical box body with a closed bottom end or of an approximately multi-prism bearing a bottom, an approximately polygonal box body with a closed bottom end, or a like.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)
US11/285,444 2004-11-22 2005-11-22 Battery and battery pack Abandoned US20060117701A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-337841 2004-11-22
JP2004337841A JP4225272B2 (ja) 2004-11-22 2004-11-22 電池及び電池パック

Publications (1)

Publication Number Publication Date
US20060117701A1 true US20060117701A1 (en) 2006-06-08

Family

ID=35919566

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/285,444 Abandoned US20060117701A1 (en) 2004-11-22 2005-11-22 Battery and battery pack

Country Status (4)

Country Link
US (1) US20060117701A1 (ja)
EP (1) EP1659649A1 (ja)
JP (1) JP4225272B2 (ja)
CN (2) CN101132056A (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090155683A1 (en) * 2007-12-13 2009-06-18 Min-Jung Yoo Insulating case for secondary battery and secondary battery using the same
US20110091752A1 (en) * 2009-10-16 2011-04-21 Kim Hyo-Seob Rechargeable battery
WO2014084088A1 (ja) * 2012-11-28 2014-06-05 株式会社 豊田自動織機 蓄電装置
US20140315056A1 (en) * 2013-04-22 2014-10-23 Samsung Sdi Co., Ltd. Secondary battery
KR20170009025A (ko) * 2015-07-15 2017-01-25 삼성에스디아이 주식회사 이차 전지
US11211668B2 (en) * 2016-08-15 2021-12-28 Kabushiki Kaisha Toyota Jidoshokki Power storage apparatus
US11489221B2 (en) * 2018-02-01 2022-11-01 Contemporary Amperex Technology Co., Limited Power battery and battery module

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007188711A (ja) * 2006-01-12 2007-07-26 Nec Tokin Corp 密閉型電池
KR101375046B1 (ko) * 2007-11-12 2014-03-17 삼성에스디아이 주식회사 이차전지
KR20090099241A (ko) * 2008-03-17 2009-09-22 삼성에스디아이 주식회사 캡 조립체 및 이를 구비하는 이차 전지
JP5365855B2 (ja) * 2009-06-04 2013-12-11 トヨタ自動車株式会社 密閉型二次電池
WO2012039247A1 (ja) * 2010-09-24 2012-03-29 三洋電機株式会社 角形密閉電池
JP5490667B2 (ja) * 2010-11-22 2014-05-14 日立ビークルエナジー株式会社 二次電池セルおよび二次電池セルの製造装置
JP2014032967A (ja) * 2013-10-16 2014-02-20 Toshiba Corp 非水電解液電池
JP2015115210A (ja) * 2013-12-12 2015-06-22 日立マクセル株式会社 非水電解質二次電池
CN106784574A (zh) * 2016-12-22 2017-05-31 中科泰能高铭科技发展有限公司 一种方形钢壳电池及其集合成电池系统的模组
KR102390766B1 (ko) * 2017-05-22 2022-04-26 삼성에스디아이 주식회사 이차 전지
CN207800664U (zh) * 2018-02-01 2018-08-31 宁德时代新能源科技股份有限公司 顶盖组件以及动力电池
JP7039728B2 (ja) * 2018-11-26 2022-03-22 株式会社東芝 蓋アセンブリ、電池及び電池パック
JP7273554B2 (ja) * 2019-03-15 2023-05-15 マクセル株式会社 密閉型電池
JP7280906B2 (ja) * 2021-03-10 2023-05-24 プライムプラネットエナジー＆ソリューションズ株式会社 二次電池およびその製造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884722A (en) * 1974-03-18 1975-05-20 Union Carbide Corp Alkaline galvanic cells
US5464701A (en) * 1995-02-27 1995-11-07 Eagle-Picher Industries, Inc. Leakproof, valve regulated, maintenance-free lead acid battery
US20040053107A1 (en) * 2002-06-28 2004-03-18 Honda Giken Kogyo Kabushiki Kaisha Fuel cell
US20040228061A1 (en) * 2002-12-26 2004-11-18 Samsung Sdi Co., Ltd Protector and lithium secondary battery having the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR8406952A (pt) * 1983-07-08 1985-06-04 Union Carbide Corp Vedacao de baixo perfil
GB2218564B (en) * 1988-05-05 1991-05-15 Duracell Int Injection molded top
JP3561554B2 (ja) * 1995-05-31 2004-09-02 三洋電機株式会社 電池
JP4424773B2 (ja) 1999-03-19 2010-03-03 三洋電機株式会社 密閉式電池

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884722A (en) * 1974-03-18 1975-05-20 Union Carbide Corp Alkaline galvanic cells
US5464701A (en) * 1995-02-27 1995-11-07 Eagle-Picher Industries, Inc. Leakproof, valve regulated, maintenance-free lead acid battery
US20040053107A1 (en) * 2002-06-28 2004-03-18 Honda Giken Kogyo Kabushiki Kaisha Fuel cell
US20040228061A1 (en) * 2002-12-26 2004-11-18 Samsung Sdi Co., Ltd Protector and lithium secondary battery having the same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090155683A1 (en) * 2007-12-13 2009-06-18 Min-Jung Yoo Insulating case for secondary battery and secondary battery using the same
US20110091752A1 (en) * 2009-10-16 2011-04-21 Kim Hyo-Seob Rechargeable battery
US8927141B2 (en) 2009-10-16 2015-01-06 Samsung Sdi Co., Ltd. Rechargeable battery
WO2014084088A1 (ja) * 2012-11-28 2014-06-05 株式会社 豊田自動織機 蓄電装置
US9711768B2 (en) 2012-11-28 2017-07-18 Kabushiki Kaisha Toyota Jidoshokki Electricity storage device
US20140315056A1 (en) * 2013-04-22 2014-10-23 Samsung Sdi Co., Ltd. Secondary battery
US9299976B2 (en) * 2013-04-22 2016-03-29 Samsung Sdi Co., Ltd. Secondary battery including a cap plate comprising an inversion plate
KR20170009025A (ko) * 2015-07-15 2017-01-25 삼성에스디아이 주식회사 이차 전지
US10249868B2 (en) 2015-07-15 2019-04-02 Samsung Sdi Co., Ltd. Secondary battery including cap plate including inversion plate
KR102425796B1 (ko) 2015-07-15 2022-07-28 삼성에스디아이 주식회사 이차 전지
US11211668B2 (en) * 2016-08-15 2021-12-28 Kabushiki Kaisha Toyota Jidoshokki Power storage apparatus
US11489221B2 (en) * 2018-02-01 2022-11-01 Contemporary Amperex Technology Co., Limited Power battery and battery module

Also Published As

Publication number Publication date
CN1780027A (zh) 2006-05-31
CN101132056A (zh) 2008-02-27
JP2006147422A (ja) 2006-06-08
JP4225272B2 (ja) 2009-02-18
CN100382358C (zh) 2008-04-16
EP1659649A1 (en) 2006-05-24

Similar Documents

Publication Publication Date Title
US20060117701A1 (en) Battery and battery pack
JP5357934B2 (ja) 電池モジュール
US9318732B2 (en) Lithium rechargeable battery
US8084152B2 (en) Lithium ion secondary battery having shape memory safety vent
US8658296B2 (en) Rechargeable battery
US20060093895A1 (en) Rechargeable battery
CN107221624B (zh) 可再充电电池
KR101768656B1 (ko) 캡 조립체 및 이를 포함하는 이차 전지
CN209981287U (zh) 二次电池的盖组件及二次电池
CN105789493B (zh) 可再充电电池和可再充电电池组
CN105932193B (zh) 可再充电电池
KR101440891B1 (ko) 이차 전지
US20060068273A1 (en) Cap assembly having a vent plate and rechargeable battery with same
EP3570344B1 (en) Secondary battery and top cover assembly thereof
KR102384308B1 (ko) 벤팅 부재를 포함하는 파우치형 전지셀 및 이를 포함하는 전지팩
US7754372B2 (en) Lithium secondary battery
US6805992B1 (en) Battery and portable device
CN110021727B (zh) 单向透气阀、二次电池的顶盖组件及二次电池
KR100646522B1 (ko) 리튬 이차전지
JP2001243991A (ja) 非水電解液型電池装置及び電池パック
JP3527548B2 (ja) 二次電池用安全装置および安全装置付き非水電解質二次電池
KR100542186B1 (ko) 이차 전지
KR101122904B1 (ko) 배터리 팩
US20230291066A1 (en) Cell tab with an integrated rupture valve for a battery cell, and a battery cell comprising said cell tab
JP2000306559A (ja) パック電池

Legal Events

Date Code Title Description
AS Assignment

Owner name: NEC CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KAJIMURA, HIDEKI;REEL/FRAME:017276/0877

Effective date: 20051110

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION