US20070231687A1 - Packing structure for lithium ion polymer battery - Google Patents

Packing structure for lithium ion polymer battery Download PDF

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Publication number
US20070231687A1
US20070231687A1 US10/956,923 US95692304A US2007231687A1 US 20070231687 A1 US20070231687 A1 US 20070231687A1 US 95692304 A US95692304 A US 95692304A US 2007231687 A1 US2007231687 A1 US 2007231687A1
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US
United States
Prior art keywords
battery
multilayer polymer
lithium ion
packing structure
polymer
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
US10/956,923
Other languages
English (en)
Inventor
Kyung Kim
Hyang Lee
Ki Hong
Sung Hwang
Sung Choo
Kyu Lee
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.)
LG Chem Ltd
Original Assignee
LG Chem 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 LG Chem Ltd filed Critical LG Chem Ltd
Assigned to LG CHEM, LTD. reassignment LG CHEM, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHOO, SUNG CHOON, HONG, KI CHUL, HWANG, SUNG MIN, KIM, KYUNG JOON, LEE, HYANG MOK, LEE, KYU SEONG
Publication of US20070231687A1 publication Critical patent/US20070231687A1/en
Priority to US12/580,531 priority Critical patent/US8980466B2/en
Abandoned 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • 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
    • 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
    • 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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag 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
    • H01M50/233—Mountings; 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
    • H01M50/24—Mountings; 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
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/579—Devices or arrangements for the interruption of current in response to shock
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a packing structure for a lithium ion polymer battery. More particularly, the present invention relates to a packing structure for a lithium ion polymer battery wherein a battery protection member is fixed to the outer circumference of a battery casing for housing the battery so that the battery contained in the battery casing can be protected from external impact. Further, the present invention relates to a packing structure for a lithium ion polymer battery, which reduces the whole size of a battery so that a device operated by the battery can be downsized.
  • a lithium ion polymer battery 1 also referred to as a “pouch battery”, includes: a main casing body 2 having an inner space 2 a of a predetermined size; a cover 3 coupled rotatably to the main casing body 2 ; a predetermined number of electrode assemblies 4 inserted in the inner space 2 a of the main casing body 2 , the electrode assembly including a cathode plate 4 a , an anode plate 4 b and a separator 4 c ; tabs 5 extending longitudinally and outwardly from the ends of the cathode plate 4 a and the anode plate 4 b of the electrode assemblies 4 ; and a cathode terminal 6 and an anode terminal 7 connected to each tab 5 .
  • an extension portion 2 b extending horizontally and outwardly by a predetermined width is formed for the purpose of heat fusion.
  • the central part of each of the cathode terminal 6 and the anode terminal 7 connected to the tab 5 is coated with an insulation tape 8 formed of a non-conductive material.
  • the insulation tape 8 is aimed to prevent a short circuit between a heat fusion device (not shown) and electrode terminals 6 , 7 , when the extension portion 2 b of the main casing body 2 is fused with an edge portion 3 a of the cover 3 by means of the heat fusion device.
  • the above-mentioned pouch type lithium ion polymer battery according to the prior art may be prepared by the method as described hereinafter.
  • a predetermined number of electrode assemblies 4 including the cathode plate 4 a , the anode plate 4 b and the separator 4 c are inserted into the inner space 2 a of the main casing body 2 .
  • a predetermined amount of electrolyte is injected into the inner space 2 a.
  • each electrode terminal 6 , 7 and the insulation tape 8 are partially protruded from the main casing body 2 and the cover 3 .
  • the cover 3 is caused to be in close contact with the main casing body 2 .
  • the extension portion 2 b of the main casing body 2 and the edge portion 3 a of the cover 3 are sealed using the heat fusion device so as to prevent leakage of the electrolyte.
  • such a conventional pouch type lithium ion polymer battery has problems in that an extension portion formed at the top edge of a main casing body for housing a predetermined number of electrode assemblies (so that it can be heat-fused to the corresponding edge portion of a cover) is too large compared to the effective size of the electrode assembly, and that the outer circumference of the main casing body coupled to the cover is wrapped with a separate plastic casing, thereby increasing the whole size of battery.
  • the present invention has been made in view of the above-mentioned problems. It is an object of the present invention to provide a packing structure for a lithium ion polymer battery, which protects a battery from external impact while minimizing an increase in size of the whole battery.
  • a packing structure for a lithium ion polymer battery which includes: a battery casing including a lower multilayer polymer and an upper multilayer polymer, wherein the lower multilayer polymer has an inner space of a predetermined size for housing at least one electrode assembly and an electrolyte and is provided with an extension portion extending radially and outwardly from the top edge of each vertical portion of the lower multilayer polymer, and a part of the upper multilayer polymer is coupled rotatably to a part of the extension portion of the lower multilayer polymer and remaining parts of the upper multilayer polymer are sealed to remaining parts of the extension portion of the lower multilayer polymer; and a battery protection member, which wraps the outer circumference of the battery casing so that the battery contained in the battery casing can be protected from external impact, and is fixed integrally by a part of the sealed extension portions.
  • FIG. 1 is a schematic exploded perspective view showing a conventional pouch type battery according to the prior art
  • FIG. 2 is a schematic perspective view of the pouch type battery as shown in FIG. 1 ;
  • FIG. 3 is a schematic exploded perspective view showing a battery protection member and a PCB (protection circuit board) applied to the packing structure for a lithium ion polymer battery according to the present invention, as provided separately from each other;
  • PCB protection circuit board
  • FIG. 4 is a schematic exploded perspective view showing a battery protection member and a PCB (protection circuit board) applied to the packing structure for a lithium ion polymer battery according to the present invention, as coupled integrally to each other;
  • PCB protection circuit board
  • FIG. 5 is a schematic perspective view showing how to fix a battery protection member applied to the packing structure for a lithium ion polymer battery according to the present invention to the outer circumference of a battery casing;
  • FIG. 6 is a schematic perspective view of the packing structure for a lithium ion polymer battery as shown in FIG. 5 ;
  • FIG. 7 is a schematic perspective view showing a cover-shaped battery protection member applied to the packing structure for a lithium ion polymer battery according to the present invention.
  • FIG. 8 is a schematic perspective view showing a “ ”-shaped battery protection member applied to the packing structure for a lithium ion polymer battery according to the present invention.
  • FIGS. 3 to 8 Reference will now be made in detail to the preferred embodiments of the present invention as shown in FIGS. 3 to 8 .
  • FIG. 3 is a schematic exploded perspective view showing a battery protection member and a PCB (protection circuit board) applied to the packing structure for a lithium ion polymer battery according to the present invention, as provided separately from each other.
  • FIG. 5 is a schematic perspective view showing how to fix a battery protection member applied to the packing structure for a lithium ion polymer battery according to the present invention to the outer circumference of a battery casing.
  • the packing structure according to the present invention includes:
  • a battery casing 11 including a lower multilayer polymer 9 and an upper multilayer polymer 10 , wherein the lower multilayer polymer 9 has an inner space 9 a of a predetermined size for housing at least one electrode assembly (not shown) and an electrolyte and is provided with an extension portion 9 b extending radially and outwardly from the top edge of each vertical portion of the lower multilayer polymer 9 , a part of the upper multilayer polymer 10 is coupled rotatably to a part of the extension portion 9 b of the lower multilayer polymer 9 and remaining parts of the upper multilayer polymer 10 are sealed to remaining parts of the extension portion 9 b of the lower multilayer polymer 9 ; and
  • a battery protection member 13 which wraps the outer circumference of the battery casing 11 so that the battery contained in the battery casing can be protected from external impact, and is fixed integrally by a part of the sealed extension portions 12 .
  • the battery protection member 13 may have the shape of a hollow frame 14 corresponding to the edges of the battery casing 11 . Otherwise, it may have the shape of a cover 15 for tightly wrapping outer surfaces of the lower multilayer polymer 9 forming one side of the battery casing 11 (See FIGS. 3, 5 and 7 ).
  • At least one crossing member (not shown) facing to the outer surface of the battery casing 11 may be formed on one side of the hollow frame 14 at predetermined intervals.
  • the battery protection member 13 may have the shape of a “ ”-shaped battery protection member 16 which wraps both the top surface and the bottom surface of the battery casing 11 (See FIG. 8 ).
  • a vertical extension portion 16 a for wrapping the lateral surfaces of the battery casing 11 may be formed at both sides of the “ ”-shaped battery protection member 16 .
  • the battery protection member 13 may be made of plastics, metals or combinations thereof. Any materials that can be injected or processed with ease while maintaining a desired strength may be used in the battery protection member 13 .
  • the front part of the extension portion 9 b facing to both electrode terminals 17 , 18 protruded out from the battery casing 11 is fitted with a PCB (protection circuit board) 19 in such a manner that the PCB 19 can be coupled detachably with the battery protection member 13 (See FIG. 5 and FIG. 6 ).
  • the PCB 19 is provided with a battery protection circuit (not shown) connected to both electrode terminals 17 , 18 so as to prevent overcharge or overdischarge of the battery, and an outlet port 19 a for making electric connections between both electrode terminals 17 , 18 of the battery and an external device (not shown) through the battery protection circuit.
  • the PCB 19 may be formed to be integrated with a part of the battery protection member 13 in a state wherein the PCB 19 is positioned in a molding space of an injection molding apparatus (See FIG. 4 ).
  • a predetermined number of electrode assemblies (not shown) are positioned in the inner space 9 a of the lower multilayer polymer 9 forming one side of the battery casing 11 and a predetermined amount of electrolyte is injected into the inner space 9 a.
  • the lower multilayer polymer 9 is covered with the upper multilayer polymer 10 forming the other side of the battery casing 11 .
  • the extension portion 9 b of the lower multilayer polymer 9 and the corresponding part of the upper multilayer polymer 10 are heat fused together by means of a heat fusion device (not shown) to seal them.
  • the battery casing 11 is turned upside down and the battery protection member 13 is fixed to the outer circumference of the battery casing 11 . Then, both lateral parts of the sealed extension portion 12 formed between the upper multilayer polymer 10 and the lower multilayer polymer 9 are folded and attached to the corresponding lateral surfaces of the battery protection member 13 .
  • both the cathode terminal 17 and the anode terminal 18 connected to the battery contained in the battery casing 11 , protrude out from the front part of the extension portion 9 b of the battery casing 11 .
  • the PCB 19 provided with a battery protection circuit (not shown) and the outlet port 19 a is aligned with the front part of the extension portion 9 b of the lower multilayer polymer 9 in the battery casing 11 .
  • the battery protection circuit of the PCB 19 is connected to each of the electrode terminals 17 , 18 and then the PCB 19 is attached to the adjacent counterpart.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)
US10/956,923 2003-01-10 2004-10-01 Packing structure for lithium ion polymer battery Abandoned US20070231687A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/580,531 US8980466B2 (en) 2003-10-01 2009-10-16 Packing structure for lithium ion polymer battery

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0068218 2003-10-01
KR10-2003-0068218A KR100529869B1 (ko) 2003-10-01 2003-10-01 리튬 이온 폴리머 전지팩 구조

Related Child Applications (1)

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US20070231687A1 true US20070231687A1 (en) 2007-10-04

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US10/956,923 Abandoned US20070231687A1 (en) 2003-01-10 2004-10-01 Packing structure for lithium ion polymer battery
US12/580,531 Active 2025-02-05 US8980466B2 (en) 2003-10-01 2009-10-16 Packing structure for lithium ion polymer battery

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Country Status (9)

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US (2) US20070231687A1 (de)
EP (1) EP1668720B1 (de)
JP (1) JP4543038B2 (de)
KR (1) KR100529869B1 (de)
CN (1) CN100474657C (de)
BR (1) BRPI0413389B8 (de)
RU (1) RU2308791C1 (de)
TW (1) TWI281280B (de)
WO (1) WO2005031897A1 (de)

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US20130236745A1 (en) * 2010-11-25 2013-09-12 Kenneth Hamilton Norton Battery pack assembly
US8574750B2 (en) 2008-04-11 2013-11-05 Kawasaki Jukogyo Kabushiki Kaisha Sealed battery to withstand internal pressures and battery module using same
US9083062B2 (en) 2010-08-02 2015-07-14 Envia Systems, Inc. Battery packs for vehicles and high capacity pouch secondary batteries for incorporation into compact battery packs
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US9608245B2 (en) 2014-09-30 2017-03-28 Johnson Controls Technology Company System for providing structural integrity of a battery module
CN112103565A (zh) * 2020-10-10 2020-12-18 惠州市枫叶电子科技有限公司 一种锂电池封装装置及封装方法
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KR20060112731A (ko) 2005-04-27 2006-11-02 삼성에스디아이 주식회사 이차 전지
KR100980104B1 (ko) 2005-09-28 2010-09-07 주식회사 엘지화학 이차전지 제조장치
KR100884473B1 (ko) * 2007-03-28 2009-02-20 삼성에스디아이 주식회사 폴리머 전지 팩
KR20130016034A (ko) 2011-08-04 2013-02-14 주식회사 엘지화학 안전성이 향상된 이차전지 팩
KR20130018097A (ko) 2011-08-12 2013-02-20 주식회사 엘지화학 신규한 구조의 이차전지 팩
KR20130065291A (ko) * 2011-12-09 2013-06-19 삼성에스디아이 주식회사 배터리 팩
JP2013152935A (ja) * 2013-02-28 2013-08-08 Lg Chem Ltd 大容量電池パック
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CN1842928A (zh) 2006-10-04
CN100474657C (zh) 2009-04-01
KR100529869B1 (ko) 2005-11-22
TWI281280B (en) 2007-05-11
EP1668720B1 (de) 2018-07-25
TW200522418A (en) 2005-07-01
JP2007503689A (ja) 2007-02-22
EP1668720A4 (de) 2010-05-26
KR20050032199A (ko) 2005-04-07
WO2005031897A1 (en) 2005-04-07
BRPI0413389A (pt) 2006-10-17
EP1668720A1 (de) 2006-06-14
US20100035145A1 (en) 2010-02-11
BRPI0413389B1 (pt) 2016-05-17
US8980466B2 (en) 2015-03-17
RU2308791C1 (ru) 2007-10-20
JP4543038B2 (ja) 2010-09-15
BRPI0413389B8 (pt) 2023-01-17

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