EP2606528A1 - Accumulateur d'énergie électrochimique comprenant une pluralité de cellules électrochimiques - Google Patents

Accumulateur d'énergie électrochimique comprenant une pluralité de cellules électrochimiques

Info

Publication number
EP2606528A1
EP2606528A1 EP11758118.1A EP11758118A EP2606528A1 EP 2606528 A1 EP2606528 A1 EP 2606528A1 EP 11758118 A EP11758118 A EP 11758118A EP 2606528 A1 EP2606528 A1 EP 2606528A1
Authority
EP
European Patent Office
Prior art keywords
extinguishing agent
electrochemical
energy store
additive
electrochemical energy
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.)
Withdrawn
Application number
EP11758118.1A
Other languages
German (de)
English (en)
Inventor
Tim Schaefer
Erhard Schletterer
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.)
Li Tec Battery GmbH
Original Assignee
Li Tec Battery GmbH
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 Li Tec Battery GmbH filed Critical Li Tec Battery GmbH
Publication of EP2606528A1 publication Critical patent/EP2606528A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
    • 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/033—Making of fire-extinguishing materials immediately before use of gel
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0064—Gels; Film-forming compositions
    • 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
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • 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
    • H01M2200/00—Safety devices for primary or secondary batteries
    • 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
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49108—Electric battery cell making

Definitions

  • the present invention relates to an electrochemical energy store.
  • fire prevention and / or fire fighting are of particular importance.
  • fire prevention or fire fighting is a particularly important means of increasing the security of such energy storage.
  • DE 10 2008 059 948 A1 discloses a method and a device for fire prevention and / or fire fighting for a lithium-ion battery of a vehicle, in particular of a motor vehicle, in which the individual cells of the battery having interior of the battery connected via an emergency line with an extinguishing agent storage is, and in which the interior of the battery and the extinguishing agent storage are at least temporarily fluidly connected via an emergency opening.
  • DE 10 2008 059 942 A1 discloses a method and a device for fire prevention and / or fire fighting in a vehicle with a coolant circuit and a fire extinguishing device.
  • the fire extinguisher is provided with emergency openings for fire fighting and / or Fire prevention can be opened and through which an extinguishing agent can be applied.
  • DE 10 2008 059 968 A1 discloses a method and a device for operating a lithium-ion battery of a vehicle, in which for fire prevention and / or firefighting of the individual cells of the battery having the interior of the battery via a line with a refrigerant circuit of the battery fluidly connected and, if necessary, at least temporarily, the refrigerant from the refrigerant circuit is introduced into the interior.
  • the present invention has for its object to provide a technical teaching for fire prevention and / or fire fighting in the context of electrochemical energy storage, while possibly overcome limitations or disadvantages of known solutions.
  • an electrochemical energy store is provided with a plurality of electrochemical cells and intermediate elements between each two adjacent electrochemical cells or between an electrochemical cell and a housing wall, said intermediate elements consisting of an extinguishing agent or an extinguishing agent additive or contain or have an extinguishing agent or an extinguishing agent additive ,
  • the intermediate elements are preferably in the form of spacers or edge protection plates.
  • an electrochemical energy store is to be understood as a device which stores energy in chemical form and can deliver this energy in electrical form to an external consumer.
  • energy storage are fuel cells and galvanic cells and aggregates of a plurality of such cells.
  • the cells are secondary cells, so electrochemical energy storage, which can deliver stored energy in a chemical form not only in electrical form to a consumer, but which store in the provision of electrical energy these also in chemical form, ie can be charged.
  • a fire is to be understood as any process in which the energy store or parts of the energy store or its surroundings transform or decompose in an undesired chemical reaction. Fires in this sense are in particular exothermic chemical reactions of components or components of an energy storage device or its environment, which often occur as a result of overheating of the energy storage device or its components.
  • an extinguishing agent is to be understood as meaning a substance or a substance mixture which exerts a extinguishing effect, ie preferably an inhibiting effect on fires and / or prevents or impedes the formation of fires.
  • an extinguishing effect should preferably be understood to mean an effect which counteracts a fire, ie which can prevent or mitigate the consequences or the development of a fire.
  • extinguishing agents or their preferred ingredients are substances which deprive a fire source of a chemical reactant without which the fire can not be sustained, or which inhibit a chemical reaction conducive to the initiation or maintenance of a fire.
  • Extinguishing agents are preferably prepared by mixing an extinguishing agent additive with a solvent or with a carrier.
  • preferred extinguishing agent additives are so-called gelling agents which, in conjunction with other materials, solvents or carriers such as preferably water, preferably form adhesive and preferably viscous gels or viscoelastic fluids, preferably by their high adhesiveness to burning objects and their surfaces distinguished.
  • Gelling agents are preferred examples of extinguishing agent additives, which are preferably based on so-called superabsorbents, and which are preferably kept as powder or solid materials or else as emulsions.
  • superabsorbents can often take up many times their weight or volume of water or other carrier substance.
  • Water-based gels which are formed by corresponding superabsorbents by mixing with water, have the advantage over conventional foam carpets that an air-tight barrier layer is formed which lasts longer than conventional foam carpets and which delivers significantly less water to the combustible material.
  • a viscoelastic fluid is to be understood as meaning a fluid which has the property of viscoelasticity.
  • An (ideal) fluid is understood as meaning a substance which does not resist any slow shear (approximately).
  • compressible fluids gases
  • incompressible fluids liquids
  • the superordinate term "fluid” is used because most physical laws apply (approximately) equally to gases and liquids, and many of their properties differ only quantitatively, but not fundamentally qualitatively, because of their behavior real fluids can be classified into "Newtonian fluids.””with the descriptive fluid mechanics and non-Newtonian fluids with the descriptive rheology.
  • Viscoelasticity refers to the time-, temperature- and / or frequency-dependent elasticity of fluids such as polymeric melts or solids, such as plastics.
  • the viscoelasticity is characterized by a partially elastic, partially viscous behavior. After removal of an external force, the material returns only incompletely to its original state; the remaining energy is dissipated in the form of flow processes.
  • a gel is to be understood to mean a finely dispersed system comprising at least one first, often solid and at least one second, frequently liquid phase. A gel is often a colloid.
  • an electrochemical energy store is provided with a plurality of electrochemical cells, between which an extinguishing agent or an extinguishing agent additive is at least partially disposed. Particularly preferably, this electrochemical energy storage on frameless, electrically connected via their side surfaces or contacts prismatic electrochemical cells.
  • an electrochemical energy store in which at least one electrochemical cell is at least partially coated or acted upon by an extinguishing agent or an extinguishing agent additive.
  • electrochemical energy stores in which the electrochemical chemical cells are at least partially laminated with their side surfaces and the extinguishing agent or an extinguishing agent additive.
  • an electrochemical energy store in which the extinguishing agent or the extinguishing agent additive is a solid or an elastically deformable material or is contained in such a material.
  • the term solid in this context should also include pressed aggregations of powders or foams, in particular elastically deformable foams.
  • an electrochemical energy storage device is provided with a housing whose walls are at least partially coated or applied with an extinguishing agent or with a deletion medium additive.
  • a housing for an electrochemical energy store means any device which is suitable and intended to prevent or impede mass transport between the components of the electrochemical energy store and its environment.
  • the housing is also suitable and intended to prevent or complicate an unwanted energy exchange of the electrochemical energy storage with its environment, especially if in this case energy, especially in non-electrical form, would be undesirably exchanged, for example thermal energy or mechanical energy
  • a housing thus preferably serves to protect the electrochemical energy storage from undesirable influences by its environment and on the other hand, the protection of the environment from stress or dangers that could emanate from the electrochemical energy storage.
  • Such housings are often but not always completely closed and in some cases adapted for controlled gas exchange between the energy store and its environment.
  • the walls of a housing for such an energy storage are those components of the housing which are suitable for preventing or hindering unwanted mass transfer or undesired energy exchange between the energy store and its environment.
  • the walls also include those components of the housing which separate different sections of the housing from each other.
  • an electrochemical energy store in which the extinguishing agent or the extinguishing agent additive can absorb or contain a multiple of its volume of water.
  • the extinguishing agent or the extinguishing agent additive can absorb or contain a multiple of its volume of water.
  • Particularly preferred in this context are extinguishing agents based on gelling agents, in particular those containing extinguishing agent additives based on so-called superabsorbents.
  • an electrochemical energy store is provided in which the extinguishing agent or the extinguishing agent additive contains at least one polymer, preferably a copolymer, particularly preferably an acrylamide copolymer or a sodium acrylate copolymer.
  • an electrochemical energy store is provided in which the extinguishing agent or the extinguishing agent additive contains at least one fatty acid ester. According to a further preferred embodiment of the invention, an electrochemical energy store is provided in which the extinguishing agent or the extinguishing agent additive contains at least one surfactant.
  • an electrochemical energy store in which the extinguishing agent or the extinguishing agent additive comprises at least one mixture or an emulsion of water and at least one fatty acid ester, at least one polymer, preferred a copolymer, particularly preferably an acrylamide copolymer or a sodium acrylate copolymer.
  • an electrochemical energy store in which the extinguishing agent is a mixture or an emulsion of about 28% of at least one polymer, about 6% of at least one surfactant, about 23% of at least one ester oil and about 43 Contains% water.
  • an electrochemical energy store is provided, is used in the extinguishing agent additive in conjunction with water and a mixture or an emulsion of about 50% of at least one polymer, about 10% of at least one surfactant and about 40% at least of an ester oil.
  • the carrier substance, with which the extinguishing agent additive can mix to form an extinguishing agent a coolant which flows through a closed during normal operation of the energy storage coolant circuit, which is designed so that the coolant in certain cases from the closed fire Exiting the coolant circuit and can develop a extinguishing effect at these points.
  • the extinguishing effect can be selectively developed in certain places that are affected by a fire; At the same time, the effect can be retained as a coolant.
  • a coolant is to be understood to mean a fluid material, in particular a gaseous or liquid heat transport medium, which can absorb heat from its environment, transport this heat through the flow, and also release this heat to its environment, and this on the basis of its physical properties Characteristics is suitable, heat by heat conduction and / or heat transfer via aerodynamic or hydrodynamic flows, in particular also over Convection currents to transport in the heat transport medium.
  • Heat transfer media commonly used in the art are, for example, air or water or other common coolants.
  • gases or liquids are common, such as chemically inert (less reactive) gases or liquids, such as noble gases or liquefied noble gases or substances with high heat capacity and / or thermal conductivity.
  • a flowable material should be understood to mean any material in which a flow can form in the aerodynamic or hydrodynamic sense, or in which such a flow can be maintained.
  • examples of such materials are in particular gases and liquids. But even in a mixture of liquids or gases and finely divided solids, so-called aerosols, or in colloidal solutions flows in this sense can be maintained or arise.
  • a particularly preferred device according to the invention has a device for stabilizing the coolant pressure in the case of local leakage of the coolant from the coolant circuit in the event of fire.
  • This embodiment of the invention may be associated with a substantial or complete preservation of the refrigerant pressure and thus the cooling effect, when the refrigerant escapes in places from the cooling circuit to develop its extinguishing effect at these points.
  • an embodiment of the invention in which water is used as the coolant, and in which this coolant flows through a closed in normal operation of the energy storage cooling circuit, which is designed so that the water can escape from the closed coolant circuit at certain points in case of fire and mixed with an extinguishing agent additive upon exiting the coolant loop to form a gel or viscoelastic fluid.
  • an extinguishing agent additive consisting of a mixture of at least one polymer, at least one surfactant and at least one ester oil.
  • an additive consisting of a mixture of about 50% of at least one polymer, about 10% of at least one surfactant and about 40% of at least one ester oil.
  • the beneficial effects of the cooling and extinguishing mixture or the additive are due to the viscoelasticity of the cooling and extinguishing mixture and its ability to bind water.
  • the adhesive force of the coolant can also be increased on smooth surfaces. The liquid does not drain off unused.
  • the evaporation rate of the liquid can be considerably reduced even at higher temperatures.
  • the liquid consumption can be significantly reduced.
  • the liquid incorporated in a gel structure can exert an increased cooling effect due to the relatively high layer thickness and the reduced rate of evaporation. This effect is of particular importance in combating fires at very high temperatures.
  • the extinguishing agent additive in some preferred embodiments, preferably takes the form of a mixture consisting of P wt% of at least one polymer, T wt% of at least one surfactant and E wt% of at least one ester oil, based on the total amount of the additive.
  • Fig. 1 shows a first embodiment of the present invention
  • Fig. 2 shows a second embodiment of the present invention
  • Fig. 3 shows a third embodiment of the present invention
  • Fig. 4 shows a fourth embodiment of the present invention
  • Fig. 5 shows a fifth embodiment of the present invention
  • Fig. 6 is a sixth embodiment of the present invention.
  • Fig. 7 shows a seventh embodiment of the present invention.
  • the exemplary embodiment of an electrochemical energy store according to the invention shown schematically in FIG. 1 has a housing 1, the walls of which are coated or charged on the inside with an extinguishing agent or extinguishing agent additive 7, 8 and its bottom with an extinguishing agent or an extinguishing agent additive 9.
  • This embodiment has over known forms of electrochemical energy storage on the advantage that in the event of a fire in the interior of the housing in which burning or combustible materials sink under the influence of gravity on the bottom plate of the housing 1, which on the walls and on the bottom plate of the Housing attached extinguishing agent or extinguishing additives 7, 8 and 9 unfold a fire-retardant effect on the combustible or burning materials, so that the fire or its development is effectively counteracted.
  • the coatings 7, 8 and 9 are not an extinguishing agent but an extinguishing agent additive, it is advantageous if the substance which together with the extinguishing agent additive gives the extinguishing agent is destroyed or destroyed by the burning electrochemical cells 2 is released and mixed with the extinguishing agent additive to the extinguishing agent or can react with this extinguishing agent.
  • a carrier substance such as water can be introduced, with which the extinguishing agent additive can mix or connect to an extinguishing agent.
  • Preferred embodiments of the invention are also those in which the materials with which the housing walls are coated or acted upon, Composite materials, which also consist in some areas of an extinguishing agent additive and a carrier, which together with the extinguishing agent additive results in the extinguishing agent, so that this composite material mixes under the influence of the evolved during firing elevated temperature or chemically reacts and thus forms the extinguishing agent.
  • the extinguishing medium additive by coating or otherwise mounted so that when external supply of a solvent or other carrier substance, such as water, on the housing walls or on the Caseback attached extinguishing agent additive with the externally supplied solvent, preferably water, connects and thus reacts to the extinguishing agent.
  • a solvent or other carrier substance such as water
  • a preferred extinguishing agent additive is a mixture or emulsion of at least one polymer, at least one surfactant and at least one ester oil. Such mixtures or emulsions mix with water to form an extinguishing agent that sustainably retains the water on the burning surfaces and therefore provides more sustainable and effective fire retardancy and cooling than water without the extinguishing additive.
  • the extinguishing agent additive preferably contains about 50% of at least one polymer, preferably about 10% of at least one surfactant and preferably about 40% of at least one ester oil.
  • the extinguishing agent additive In cases where the extinguishing agent additive is already applied in conjunction with its solvent or with its carrier, especially in combination with water as a mixture or emulsion on the housing walls or on the housing bases or other components of the electrochemical energy storage, the extinguishing agent preferably has a gelatinous, especially viscous consistency and preferably consists of about 28% of at least one polymer, about 6% of at least one surfactant, about 23% of at least one ester oil and about 43% of water.
  • an extinguishing agent or an extinguishing agent additive is preferred, which is a gel or a viscous fluid.
  • extinguishing agent or extinguishing additive which is a solid or an elastically deformable material or which is contained in such a solid or elastically deformable material.
  • extinguishing agents or extinguishing agent additives 7, 8 attached to the housing walls and to the extinguishing agents or extinguishing agent additives 9 disposed in the housing base, extinguishing agents or extinguishing agent additives 10 are arranged between the electrochemical cells 2, this arrangement the extinguishing agent or extinguishing agent additives preferably occurs in regions, as shown schematically in Fig. 2.
  • FIG. 3 shows an exemplary embodiment of the invention in which the electrochemical cells 2 have no electrical absorber 3 led out of the cell housing or out of the cell packaging, but in which the electrochemical cells 2 are contacted via their cell walls or cell packaging side surfaces 11 that a series electrical connection of a plurality of cells 2 can be effected in that the electrically conductive or at least partially conductive cell walls touch each other, as shown in Fig. 3.
  • the extinguishing agent or extinguishing agent additives are arranged in regions on the cell walls 7, 8 or mounted on the base plate 9.
  • the cell stack shown in Fig. 3 consists of two sub-stacks, each containing three cells, and which are connected via electrical Abieiter 3 and 6.
  • the electrical connector 6 is designed so that in some areas an extinguishing agent or an extinguishing agent additive 10 can be arranged between the two sub-cell stacks.
  • FIG. 4 schematically shows an embodiment of the invention in which electrochemical cells or their side walls are at least partially coated with an extinguishing agent or extinguishing agent additive 12.
  • an extinguishing agent or extinguishing agent additive 12 When the cell packaging is broken, a fire resulting from the emergence of burning or combustible material can be inhibited by the extinguishing agents or extinguishing agent additives applied to the cell packaging walls.
  • FIG. 5 shows an exemplary embodiment of the invention in which the electrochemical cells 2 are laminated on at least some areas with their side surfaces and the extinguishing agent 13 or with an extinguishing agent additive 13.
  • contact elements or contact layers of electrically conductive material 14 are preferably provided, which effect the electrical interconnection of the cells with one another.
  • the protruding from the cell housing or from the cell package Abieiter 3 of the cells as in other embodiments of the invention via an electrically conductive connector 6 are connected together.
  • FIG. 6 shows an embodiment variant of the embodiment shown in FIG. 5, in which the wall coatings 7 and 8 and the floor coating 9 with the extinguishing agent or extinguishing agent additive are so expanded that these coatings reach the edges and walls of the electrochemical cells. Also disposed between the sub-cell stacks extinguishing agent or extinguishing agent additive 10 is so extended that the space between the electrochemical cells and the space below the electrochemical cells are practically completely filled.
  • the fire retardant and cooling effect of the extinguishing agent has an immediate effect on the housing or packaging walls of the electrochemical cells 2.
  • FIGS. 5 and 6 show a further embodiment variant of the embodiments of the invention shown in FIGS. 5 and 6, in which the space regions above and below the cell housing edges, where preferably the Abieiter out of the cell housings or packaging are led out, with extinguishing agent or extinguishing agent additives 15th , 16 and 17 are completed.

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Battery Mounting, Suspending (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Secondary Cells (AREA)

Abstract

Accumulateur d'énergie électrochimique comportant une pluralité de cellules électrochimiques (2) et d'éléments intermédiaires (7-17) situés respectivement entre deux cellules électrochimiques voisines ou entre une cellule électrochimique et une paroi de boîtier, ces éléments intermédiaires étant composés d'un agent d'extinction ou d'un additif d'agent d'extinction ou contenant un agent d'extinction ou un additif d'agent d'extinction ou comportant un agent d'extinction ou un additif d'agent d'extinction.
EP11758118.1A 2010-08-19 2011-08-17 Accumulateur d'énergie électrochimique comprenant une pluralité de cellules électrochimiques Withdrawn EP2606528A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010034826A DE102010034826A1 (de) 2010-08-19 2010-08-19 Elektrochemischer Energiespeicher mit einer Mehrzahl von elektrochemischen Zellen
PCT/EP2011/004148 WO2012022480A1 (fr) 2010-08-19 2011-08-17 Accumulateur d'énergie électrochimique comprenant une pluralité de cellules électrochimiques

Publications (1)

Publication Number Publication Date
EP2606528A1 true EP2606528A1 (fr) 2013-06-26

Family

ID=44654057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11758118.1A Withdrawn EP2606528A1 (fr) 2010-08-19 2011-08-17 Accumulateur d'énergie électrochimique comprenant une pluralité de cellules électrochimiques

Country Status (7)

Country Link
US (1) US20140014376A1 (fr)
EP (1) EP2606528A1 (fr)
JP (1) JP2014502000A (fr)
KR (1) KR20140005146A (fr)
CN (1) CN103125039A (fr)
DE (1) DE102010034826A1 (fr)
WO (1) WO2012022480A1 (fr)

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US20150056482A1 (en) * 2012-04-24 2015-02-26 Valmet Automotive Oy Battery pack with a fire preventing agent
JP5880847B2 (ja) * 2012-04-25 2016-03-09 三菱自動車工業株式会社 バッテリ装置
JP5953925B2 (ja) * 2012-05-15 2016-07-20 三菱自動車工業株式会社 電池のエネルギ放出装置
CN102849364B (zh) * 2012-08-28 2015-04-29 奇瑞汽车股份有限公司 一种锂离子电池安全防护装置及方法
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US20140014376A1 (en) 2014-01-16
KR20140005146A (ko) 2014-01-14
DE102010034826A1 (de) 2012-02-23
CN103125039A (zh) 2013-05-29
WO2012022480A1 (fr) 2012-02-23

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