PL2394319T3 - Matryca o wielu przewodnościach dla odbieraków prądu akumulatora - Google Patents

Matryca o wielu przewodnościach dla odbieraków prądu akumulatora

Info

Publication number
PL2394319T3
PL2394319T3 PL10738170T PL10738170T PL2394319T3 PL 2394319 T3 PL2394319 T3 PL 2394319T3 PL 10738170 T PL10738170 T PL 10738170T PL 10738170 T PL10738170 T PL 10738170T PL 2394319 T3 PL2394319 T3 PL 2394319T3
Authority
PL
Poland
Prior art keywords
multiply
current collectors
battery current
conductive matrix
matrix
Prior art date
Application number
PL10738170T
Other languages
English (en)
Inventor
Joey Chung Yen Jung
Original Assignee
Evt Power, Inc.
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 Evt Power, Inc. filed Critical Evt Power, Inc.
Publication of PL2394319T3 publication Critical patent/PL2394319T3/pl

Links

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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/665—Composites
    • H01M4/667—Composites in the form of layers, e.g. coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/668—Composites of electroconductive material and synthetic resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • H01M4/808—Foamed, spongy materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/82—Multi-step processes for manufacturing carriers for lead-acid accumulators
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/72—Grids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/72—Grids
    • H01M4/74—Meshes or woven material; Expanded metal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/72—Grids
    • H01M4/74—Meshes or woven material; Expanded metal
    • H01M4/742—Meshes or woven material; Expanded metal perforated material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/72—Grids
    • H01M4/74—Meshes or woven material; Expanded metal
    • H01M4/745—Expanded metal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/72—Grids
    • H01M4/74—Meshes or woven material; Expanded metal
    • H01M4/747—Woven material
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/10—Battery-grid making

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)
PL10738170T 2009-02-05 2010-01-05 Matryca o wielu przewodnościach dla odbieraków prądu akumulatora PL2394319T3 (pl)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US20704809P 2009-02-05 2009-02-05
PCT/CA2010/000006 WO2010088755A1 (en) 2009-02-05 2010-01-05 Multiply-conductive matrix for battery current collectors
EP10738170.9A EP2394319B1 (en) 2009-02-05 2010-01-05 Multiply-conductive matrix for battery current collectors

Publications (1)

Publication Number Publication Date
PL2394319T3 true PL2394319T3 (pl) 2020-07-27

Family

ID=42541617

Family Applications (1)

Application Number Title Priority Date Filing Date
PL10738170T PL2394319T3 (pl) 2009-02-05 2010-01-05 Matryca o wielu przewodnościach dla odbieraków prądu akumulatora

Country Status (13)

Country Link
US (1) US9178217B2 (pl)
EP (1) EP2394319B1 (pl)
JP (1) JP5595423B2 (pl)
KR (1) KR101679095B1 (pl)
CN (1) CN102308415B (pl)
AU (1) AU2010210323B2 (pl)
BR (1) BRPI1008746A2 (pl)
CA (1) CA2726308C (pl)
MX (1) MX2011008194A (pl)
PL (1) PL2394319T3 (pl)
RU (1) RU2558942C2 (pl)
WO (1) WO2010088755A1 (pl)
ZA (1) ZA201106413B (pl)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI1008746A2 (pt) 2009-02-05 2017-05-16 Evt Power Inc multiplicar a matriz condutora para correntes coletoras de bateria
WO2012061919A1 (en) * 2010-11-10 2012-05-18 Epic Ventures Inc. Lead acid cell with active materials held in a lattice
WO2013036801A1 (en) 2011-09-07 2013-03-14 24M Technologies, Inc. Semi-solid electrode cell having a porous current collector and methods of manufacture
US20130171502A1 (en) * 2011-12-29 2013-07-04 Guorong Chen Hybrid electrode and surface-mediated cell-based super-hybrid energy storage device containing same
US8808914B2 (en) 2012-01-13 2014-08-19 Energy Power Systems, LLC Lead-acid battery design having versatile form factor
US9263721B2 (en) 2012-01-13 2016-02-16 Energy Power Systems LLC Lead-acid battery design having versatile form factor
US9595360B2 (en) 2012-01-13 2017-03-14 Energy Power Systems LLC Metallic alloys having amorphous, nano-crystalline, or microcrystalline structure
US9401501B2 (en) 2012-05-18 2016-07-26 24M Technologies, Inc. Electrochemical cells and methods of manufacturing the same
US9178200B2 (en) * 2012-05-18 2015-11-03 24M Technologies, Inc. Electrochemical cells and methods of manufacturing the same
EP3706205B1 (en) 2014-10-13 2024-01-03 24M Technologies, Inc. Systems and methods for series battery charging and forming
CN112803057A (zh) 2014-11-05 2021-05-14 24M技术公司 具有半固体电极的电化学电池及其制造方法
WO2016205663A1 (en) 2015-06-18 2016-12-22 24M Technologies, Inc. Single pouch battery cells and methods of manufacture
DE102016220975A1 (de) * 2016-10-25 2018-04-26 Robert Bosch Gmbh Stromkollektor für eine Energiespeicherzelle zum Speichern elektrischer Energie
US10665909B2 (en) 2017-07-17 2020-05-26 International Business Machines Corporation Battery thermal run-away and combustion prevention system
WO2019083382A2 (en) * 2017-10-24 2019-05-02 Czerwinski Andrzej COMPOSITE LEAD-ACID BATTERY COMPRISING CURRENT COLLECTORS BASED ON CONDUCTIVE POROUS CARBON SHAPED ELEMENTS AND PROCESSES FOR MAKING SAME
WO2019153277A1 (zh) * 2018-02-09 2019-08-15 深圳前海优容科技有限公司 电池、电池电芯及集流体
IL266910B (en) 2019-05-27 2020-11-30 Addionics Il Ltd 3D structures are produced electrochemically for electrodes in batteries
US11742525B2 (en) 2020-02-07 2023-08-29 24M Technologies, Inc. Divided energy electrochemical cell systems and methods of producing the same
US12381277B2 (en) 2020-06-17 2025-08-05 24M Technologies, Inc. Electrochemical cells with flame retardant mechanism and methods of producing the same
DE102021200736A1 (de) * 2021-01-27 2022-07-28 Volkswagen Aktiengesellschaft Elektrode sowie Sekundär-Batteriezelle mit einer solchen Elektrode
US20230187652A1 (en) * 2021-12-10 2023-06-15 Uop Llc Current collector for redox flow batteries
CN116905155A (zh) * 2023-09-11 2023-10-20 远东铜箔(宜宾)有限公司 一种用于制备电池负极集流体的铜丝线纺织布

Family Cites Families (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635676A (en) * 1969-11-05 1972-01-18 Atomic Energy Commission Method for increasing the strength of carbon foam
US3709843A (en) * 1970-04-09 1973-01-09 Olin Corp Polyurethane foams having increased density
US3720574A (en) 1971-07-28 1973-03-13 Scott Paper Co Filter element
JPS57210569A (en) 1981-06-19 1982-12-24 Matsushita Electric Ind Co Ltd Battery constituted by use of resin electrodes
US4436601A (en) 1981-07-24 1984-03-13 Diamond Shamrock Corporation Metal removal process
US4535040A (en) 1982-01-20 1985-08-13 General Motors Corporation Battery grid
US4444852A (en) * 1982-08-27 1984-04-24 The United States Of America As Represented By The United States Department Of Energy Size and weight graded multi-ply laminar electrodes
US4606383A (en) 1983-12-15 1986-08-19 Wirtz Manufacturing Company, Inc. Battery grid pasting machine
US4975515A (en) 1987-10-21 1990-12-04 Ethyl Corporation Polyurethanes
WO1993003934A1 (en) * 1991-08-12 1993-03-04 Duel Limited Tabbed or indexed sheets
WO1993021000A1 (en) * 1992-04-10 1993-10-28 W.L. Gore & Associates, Inc. A method of ultrasonically welding articles of porous polytetrafluoroethylene
FR2705834B1 (fr) * 1993-05-26 1995-06-30 Accumulateurs Fixes Procédé de liaison d'une connexion métallique sur une électrode dont l'âme a une structure fibreuse ou de type mousse pour générateur électrochimique, et électrode obtenue.
US5478676A (en) 1994-08-02 1995-12-26 Rexam Graphics Current collector having a conductive primer layer
US5571415A (en) * 1994-11-02 1996-11-05 Rohm And Haas Company Method for preparing porous polymer structures
US6020089A (en) * 1994-11-07 2000-02-01 Sumitomo Electric Industries, Ltd. Electrode plate for battery
US5817704A (en) * 1996-03-08 1998-10-06 The Procter & Gamble Company Heterogeneous foam materials
US6472105B2 (en) * 1997-11-19 2002-10-29 Mitsubishi Denki Kabushiki Kaisha Bonding agent for cells and cell using the same
US6238819B1 (en) * 1998-01-23 2001-05-29 Stork, N.V. Metal foam support, electrode and method of making same
US6306215B1 (en) 1998-03-10 2001-10-23 Valence Technology, Inc. Apparatus for coating current collectors
JPH11323406A (ja) * 1998-03-18 1999-11-26 Mitsubishi Materials Corp 高強度スポンジ状多孔質金属板およびその製造方法
US6060198A (en) * 1998-05-29 2000-05-09 Snaper; Alvin A. Electrochemical battery structure and method
US6183854B1 (en) 1999-01-22 2001-02-06 West Virginia University Method of making a reinforced carbon foam material and related product
JP4292436B2 (ja) * 1999-05-26 2009-07-08 住友電気工業株式会社 金属多孔質体とその製造方法およびそれを用いた電池用集電体
JP3466576B2 (ja) * 2000-11-14 2003-11-10 三井鉱山株式会社 リチウム二次電池負極用複合材料及びリチウム二次電池
US20020155338A1 (en) * 2001-04-24 2002-10-24 Nitech S. A. Electrochemical cell
JP4378902B2 (ja) * 2001-08-31 2009-12-09 三菱マテリアル株式会社 電極板
EP1449269A4 (en) * 2001-09-26 2007-11-28 Power Technology Inc CURRENT COLLECTOR STRUCTURE AND METHOD FOR IMPROVING THE EFFICIENCY OF A LEAD CARD
JP2003203639A (ja) * 2001-12-28 2003-07-18 Sanyo Electric Co Ltd アルカリ蓄電池およびその製造方法
US6979513B2 (en) * 2002-06-28 2005-12-27 Firefly Energy Inc. Battery including carbon foam current collectors
US20040002006A1 (en) * 2002-06-28 2004-01-01 Caterpillar Inc. Battery including carbon foam current collectors
US7341806B2 (en) * 2002-12-23 2008-03-11 Caterpillar Inc. Battery having carbon foam current collector
US6933077B2 (en) 2002-12-27 2005-08-23 Avestor Limited Partnership Current collector for polymer electrochemical cells and electrochemical generators thereof
KR100560542B1 (ko) 2003-11-20 2006-03-15 삼성에스디아이 주식회사 리튬 이차 전지
US20060165876A1 (en) 2004-03-26 2006-07-27 Elod Gyenge Current Collector Structure and Methods to Improve the Performance of a Lead-Acid Battery
US20050235472A1 (en) * 2004-03-26 2005-10-27 Joey Jung Method of manufacture of a battery and current collector
RU46130U1 (ru) * 2004-12-16 2005-06-10 Закрытое акционерное общество "ЭЛЕКТРОТЯГА" Отрицательный электрод для свинцово-кислотного аккумулятора
KR101272879B1 (ko) 2004-12-31 2013-06-11 카운슬 오브 사이언티픽 앤드 인더스트리얼 리서치 도전성 폴리머 코팅층을 갖는 납축전지용 그리드
US20060292448A1 (en) * 2005-02-02 2006-12-28 Elod Gyenge Current Collector Structure and Methods to Improve the Performance of a Lead-Acid Battery
JP4213687B2 (ja) * 2005-07-07 2009-01-21 株式会社東芝 非水電解質電池及び電池パック
US20070051636A1 (en) 2005-09-07 2007-03-08 Inco Limited Process for producing metal foams having uniform cell structure
CN101507016B (zh) 2006-06-26 2012-06-27 株式会社Lg化学 用于电池组电池的电极板以及制备该电极板的方法
EP2052016A1 (en) * 2006-08-18 2009-04-29 Firefly Energy Inc. Composite carbon foam
US8399134B2 (en) * 2007-11-20 2013-03-19 Firefly Energy, Inc. Lead acid battery including a two-layer carbon foam current collector
BRPI1008746A2 (pt) 2009-02-05 2017-05-16 Evt Power Inc multiplicar a matriz condutora para correntes coletoras de bateria

Also Published As

Publication number Publication date
CN102308415B (zh) 2016-04-20
MX2011008194A (es) 2011-12-06
CN102308415A (zh) 2012-01-04
KR20110132363A (ko) 2011-12-07
AU2010210323A1 (en) 2011-09-01
RU2011135464A (ru) 2013-03-10
ZA201106413B (en) 2012-05-30
CA2726308A1 (en) 2010-08-12
US20110287314A1 (en) 2011-11-24
KR101679095B1 (ko) 2016-12-06
RU2558942C2 (ru) 2015-08-10
US9178217B2 (en) 2015-11-03
BRPI1008746A2 (pt) 2017-05-16
WO2010088755A1 (en) 2010-08-12
EP2394319A4 (en) 2016-12-21
AU2010210323B2 (en) 2014-01-09
JP2012517077A (ja) 2012-07-26
EP2394319B1 (en) 2020-02-19
JP5595423B2 (ja) 2014-09-24
CA2726308C (en) 2011-11-01
EP2394319A1 (en) 2011-12-14

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