EP2467891A1 - Procédé et dispositif pour refroidir un accumulateur d'énergie électrochimique - Google Patents

Procédé et dispositif pour refroidir un accumulateur d'énergie électrochimique

Info

Publication number
EP2467891A1
EP2467891A1 EP10747589A EP10747589A EP2467891A1 EP 2467891 A1 EP2467891 A1 EP 2467891A1 EP 10747589 A EP10747589 A EP 10747589A EP 10747589 A EP10747589 A EP 10747589A EP 2467891 A1 EP2467891 A1 EP 2467891A1
Authority
EP
European Patent Office
Prior art keywords
coolant
surfactant
polymer
mixture
ester oil
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Withdrawn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
EP10747589A
Other languages
German (de)
English (en)
Inventor
Joerg Kaiser
Volker Hennige
Holger Mikus
Tim Schaefer
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 EP2467891A1 publication Critical patent/EP2467891A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/10—Liquid materials
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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
    • H01M6/5038—Heating or cooling of 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
    • 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
    • H01M2200/00—Safety devices for primary or secondary 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
    • 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 method and a device for cooling an electrochemical energy store, in particular a lithium-ion accumulator.
  • electrochemical energy store in particular a lithium-ion accumulator.
  • Such electrochemical energy storage find application in motor vehicles, for example.
  • the invention can also be used in electrochemical energy storage without lithium and also independent of motor vehicles application.
  • DE 10 2005 017 648 A1 discloses a liquid-cooled battery with a plurality of memory cells and at least one volume in heat-conducting contact with the memory cells, through which a cooling medium can flow.
  • each of the memory cells has a safety valve, which opens from a predetermined media pressure in the memory cell and connects the volume of the memory cell with the environment.
  • the safety valves are arranged in the memory cells such that, in the case of opening one of the safety valves, a connection is created between the volume through which the cooling medium can flow and the interior of the memory cell with the safety valve open.
  • Other devices and methods for cooling electrochemical energy storage have become known, which can not be represented here in an exhaustive or approximately representative. As different as these devices and methods are, they all have in common that they can not with great certainty prevent overheating of an electrochemical energy store and consequently a possible fire of this energy store.
  • the present invention is therefore based on the object of specifying a device and a method for cooling electrochemical energy storage, which can mitigate the consequences of overheating and in particular a fire of the energy storage.
  • a device and a method for cooling an electrochemical energy store in particular a lithium-containing galvanic cell, are provided, in which or a cooling agent, which unfolds when extinguishing a fire, the energy storage, the housing or parts of the energy storage or his Housing flows around or flows through.
  • the object is further achieved by the use of a mixture of a polymer, a surfactant, an ester oil and water or by the use of an additive in the form of a mixture of a polymer, a surfactant and / or an ester oil in combination with water as a coolant Cooling an electrochemical energy storage, in particular a lithium-containing galvanic cell, wherein the coolant, the energy storage, the housing or parts of the energy storage or flows around his housing or flows through and unfolds a fire when a fire occurs.
  • an electrochemical energy store is to be understood as meaning any type of energy store, from which electrical energy can be taken, wherein an electrochemical reaction takes place in the interior of the energy store.
  • the term includes in particular galvanic cells of all kinds, in particular primary cells, secondary cells and interconnections of such cells to batteries from such cells.
  • Such electrochemical energy stores usually have negative and positive electrodes, which are separated by a so-called separator. Between the electrodes an ion transport through an electrolyte takes place.
  • 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 Eigen shadow is suitable to transport heat by heat conduction and / or heat transport via aerodynamic or hydrodynamic flows, in particular via convection currents 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 is maintained can be obtained.
  • 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.
  • an extinguishing effect is understood to mean an effect which counteracts a fire, i. prevent or mitigate the consequences or the occurrence of a fire.
  • 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.
  • 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, from one another Fluids "with their descriptive fluid mechanics and non-Newtonian fluids with the descriptive rheology. The difference here is in the flow behavior of the medium, which is due to the functional relationship of Shear stress or shear stress and distortion speed or shear rate is described.
  • Viscoelasticity refers to the time-, temperature- and / or frequency-dependent elasticity of fluids such as e.g. of 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.
  • the solid phase forms a spongy, three-dimensional network whose pores are filled by a liquid or by a gas. Both phases often penetrate completely.
  • Colloids are particles or droplets which are finely distributed in another medium (solid, gas or liquid), the dispersion medium.
  • the coolant flows through a closed in normal operation of the energy storage coolant circuit, which is designed so that the coolant escape at certain points from the closed coolant circuit in case of fire and can develop a extinguishing effect at these points.
  • the extinguishing effect can be deployed specifically in certain places that are affected by a fire;
  • the effect can be retained as a coolant.
  • 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.
  • the coolant is a gel or a viscoelastic fluid.
  • Gels are often associated with a fluid enhanced cooling effect.
  • the rate of evaporation of the liquid component of a gel is often reduced relative to the liquid.
  • the residence time and the duration of action of the liquid component are often improved.
  • a gel can provide an effective air seal at the source of the fire.
  • the coolant is a colloidal viscoelastic fluid.
  • the coolant contains water. Water is a readily available and in many cases very effective coolant and extinguishing agent. Its suitability may be limited by the choice of a particular technology for the galvanic cell of an electrochemical energy store.
  • the coolant consists of a mixture of water and a polymer, a surfactant, and / or an ester oil.
  • the coolant consists of a mixture of at least one polymer, at least one surfactant, at least one ester oil and water.
  • the coolant consists of a mixture of P wt .-% of at least one polymer, T wt .-% of at least one surfactant, E wt .-% of at least one ester oil and W wt .-% water, based on the Total amount of coolant, where
  • the coolant consists of a mixture of P wt .-% of at least one polymer, T wt .-% of at least one surfactant, E wt .-% of at least one ester oil and W wt .-% water, based on the Total amount of coolant, where
  • the coolant consists of a mixture 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.
  • the coolant is characterized by a dynamic viscosity of between 100 and 1000 mPas.
  • a coolant which flows through a closed during normal operation of the energy storage coolant circuit, which is designed so that the coolant can escape at certain points from the closed coolant circuit in case of fire and on leaving the coolant circuit with a Additive is mixed, whereby a gel or a visco-elastic fluid is formed.
  • water is used as the coolant, which flows through a closed in normal operation of the energy storage coolant circuit, which is designed so that the water can escape from the closed coolant circuit at certain points in case of fire and when leaving the coolant circuit with a Additive is mixed, whereby a gel or a viscoelastic fluid is formed.
  • the additive consists of a mixture of at least one polymer, at least one surfactant and at least one ester oil.
  • the additive consists of a mixture 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, wherein
  • the additive consists of a mixture 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, wherein
  • the additive consists 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 use of a mixture 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 as coolant for cooling an electrochemical energy store, in particular a lithium-containing one, is particularly preferred galvanic cell, wherein the coolant flows around the energy storage, the housing or parts of the energy storage device or its housing or flows through and unfolds a fire when a fire occurs.
  • an additive in the form of a mixture consisting of a polymer, a surfactant and / or an ester oil in combination with water as coolant for cooling an electrochemical energy store, in particular a galvanic cell containing lithium
  • the coolant stores the energy store, the housing or parts of the energy store or its housing flows around or flows through and unfolds a fire when a fire occurs in conjunction with the additive.
  • an additive in 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, wherein
  • an additive in the form of a mixture consisting of P wt .-% of at least one polymer, T wt .-% of at least one surfactant and ⁇ wt .-% of at least one ester oil, based on the total amount of the additive, wherein
  • 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 in conjunction with water as a coolant for cooling an electrochemical energy store, in particular special of a lithium-containing galvanic cell, wherein the coolant flows around the energy storage, the housing or parts of the energy storage device or its housing or flows through and unfolds a extinguishing effect when a fire occurs in conjunction with the additive.
  • FIG. 1 is a schematic representation of a device according to the invention for cooling an electrochemical energy store according to a first exemplary embodiment of the invention; a schematic representation of the cooling according to the invention of an electrochemical energy store according to a second embodiment of the invention; a schematic representation of the cooling according to the invention of an electrochemical energy store according to a second embodiment of the invention; and
  • FIG. 4 shows a schematic representation of the cooling according to the invention of an electrochemical energy store according to a second exemplary embodiment of the invention.
  • an electrochemical energy store has a housing 101, 201, 301, 401 in which various components of the electrochemical energy store are located. These components comprise an array of electrodes 105, 106 which are separated by an array of separators and between which is an ionically conductive electrolyte.
  • the active materials in the interior of the electrochemical energy storage that can be arranged in different ways in the galvanic cell.
  • Electrodes 105, 106 are frequently via so-called internal absorbers 107, 207, 307, 407 and 108, 208, 308, 408 with so-called external current conductors 102, 202, 302, 402 or 103, 203, 303, 403.
  • the positive electrodes 105, 205, 305, 405 are connected to the positive absorber 102, 202, 302, 402 and the negative electrodes 106, 206, 306, 406 are connected to the negative absorber 103, 203, 303, 403.
  • separators 1 12, 212, 312, 412 are arranged, which prevent an internal short circuit of the galvanic cell.
  • the invention provides that a coolant 109, 209, 309, 409 flows around the energy storage, the housing 101, 201, 301, 401 or parts of the energy storage device or its housing or flows through. According to the invention, it is further provided that this coolant develops a extinguishing effect when a fire occurs.
  • FIG. 1 A first embodiment of the invention is shown schematically in Fig. 1.
  • the coolant 109 flows through special flow channels 104, which are preferably designed so that the coolant is thermally in very good contact with the interior of the electrochemical energy storage, but at the same time a direct, chemical reactions enabling contact of the coolant with the interior the energy storage is avoided in normal operation.
  • the flow channels 104 are preferably designed so that the coolant in the Fire can escape from the flow channels and so can develop a extinguishing effect inside the electrochemical energy storage. This can be done, for example, that the flow channels are designed so that they are locally destroyed by a fire or at least opened, so that the coolant 109 can escape from the flow channels 104.
  • the outlet of the coolant 209 from the flow channel 204 is effected by a special device 210 which, in the event of a fire, intentionally opens the flow channel 204, so that a coolant outlet into the flow channel 204 opens Inside the electrochemical energy storage can be done.
  • a special device 210 is, for example, rupture disks, preferably thermally controlled valves, or also, for example, electrically controlled valves, which may be connected to preferably suitable temperature sensors and preferably to suitable control logic.
  • FIG. 3 shows schematically a third embodiment of the invention, in which the flow channels 304, through which the coolant 309 flows, outside the housing 301 of the electrochemical energy store are arranged, and in which a heat conduction 31 1, ensures that between the Flow channel 304 and the housing 301 of the energy storage is a sufficiently good brothleitcard.
  • the fourth exemplary embodiment of the present invention shown schematically in FIG. 4 differs from the third exemplary embodiment in that here, similar to FIG. 2, a device 410 is provided which is intended to effect a controlled escape of the coolant from the flow channel in case of fire ,
  • the heat-conducting device 31 1, 41 1 is preferably a metallic, in any case good heat-conducting body whose shape is preferably the shape of the Flow channels and / or the shape of the housing is adapted so that the best possible heat conduction between the coolant and the housing is achieved.
  • the present invention can be implemented in various ways. These exemplary embodiments have in common that a coolant flows around or flows through an electrochemical energy store, its housing or parts of the energy store or its housing, and that this coolant develops a extinguishing effect when a fire occurs.
  • the coolant will flow through a closed during normal operation of the energy storage coolant circuit, as shown schematically in Figures 1 to 4.
  • This coolant circuit which preferably comprises flow channels, is preferably designed so that the coolant can escape from the closed cooling circuit at certain points in the event of a fire and can develop a extinguishing effect at these points.
  • a further preferred embodiment of the invention provides that the coolant pressure is stabilized by a device in case of a local leakage of the coolant from the coolant circuit in case of fire.
  • a device in case of a local leakage of the coolant from the coolant circuit in case of fire.
  • Such devices can in turn be realized in different ways.
  • a preferred possibility is to control the coolant pressure by a pumping device so that it can be kept constant in the localized exit of the coolant or at least maintained at a level which ensures the further function of the coolant circuit.
  • a device may also include a valve control, which ensures that the coolant from the cooling circuit leaked in places only temporary and / or only in a limited amount, so that the coolant pressure loss is either limited or fast by a subsequent delivery of coolant from a reservoir can be compensated.
  • a gel or a viscoelastic fluid as a coolant is provided.
  • Such gels or viscoelastic fluids can be easily prepared by also adding a corresponding additive, for example, a gel concentrate to water.
  • a gel concentrate for example, a gel concentrate to water.
  • Such gels are known to bring fires under control more quickly, as water is converted into a fire-repellent and heat-absorbing gel by suitable additives or gel concentrates, which also adhere well to smooth surfaces, whereby the water bound in the gel can better develop its extinguishing power, because it does not go unused flows.
  • coolants which contain water.
  • a coolant consisting of a mixture of at least one polymer, at least one surfactant, at least one ester oil and water.
  • a coolant consisting of a mixture 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% water.
  • Such compounded coolants preferably have in their structure superabsorbent polymers that are slightly swollen with water.
  • the addition of ester oil hinders the polymers from further absorption of water.
  • the water-in-oil emulsion becomes an oil-in-water emulsion; So there is a so-called phase reversal.
  • the hereby released residual capacity of the superabsorbent polymers binds the remaining water itself.
  • This process can be noticeably accelerated by supplying kinetic energy, for example by stirring, pumping or mixing in a water stream.
  • a coolant flow channel so the desired viscosity level can be adjusted quickly, so that the gel is immediately available at the outlet.
  • coolants having a dynamic viscosity between 100 and 1000 mPas. A higher viscosity generally promotes the extinguishing effect of the coolant, but on the other hand complicates the flow of the coolant through the flow channels.
  • Embodiments of the invention are therefore preferred in which the viscosity of the coolant is kept low prior to its exit from the flow channels, and in which the viscosity of the coolant is increased as rapidly as possible when it leaves the flow channels.
  • an 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 advantageous effects of the cooling and extinguishing mixture or of the additive are based on the viscoelasticity of the cooling and extinguishing mixture and on 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.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Secondary Cells (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention concerne un dispositif pour refroidir un accumulateur d'énergie électrochimique, notamment une cellule galvanique contenant du lithium. Selon l'invention, un fluide de refroidissement (209), qui déploie un effet extincteur lorsque survient un incendie, circule dans l'accumulateur d'énergie, son boîtier (201) ou des parties de l'accumulateur d'énergie et de son boîtier ou bien autour de ceux-ci.
EP10747589A 2009-08-19 2010-08-19 Procédé et dispositif pour refroidir un accumulateur d'énergie électrochimique Withdrawn EP2467891A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009038065A DE102009038065A1 (de) 2009-08-19 2009-08-19 Verfahren und Vorrichtung zum Kühlen eines elektrochemischen Energiespeichers
PCT/EP2010/005094 WO2011020616A1 (fr) 2009-08-19 2010-08-19 Procédé et dispositif pour refroidir un accumulateur d'énergie électrochimique

Publications (1)

Publication Number Publication Date
EP2467891A1 true EP2467891A1 (fr) 2012-06-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10747589A Withdrawn EP2467891A1 (fr) 2009-08-19 2010-08-19 Procédé et dispositif pour refroidir un accumulateur d'énergie électrochimique

Country Status (8)

Country Link
US (1) US20120231304A1 (fr)
EP (1) EP2467891A1 (fr)
JP (1) JP2013502677A (fr)
KR (1) KR20120065346A (fr)
CN (1) CN102576881A (fr)
BR (1) BR112012002769A2 (fr)
DE (1) DE102009038065A1 (fr)
WO (1) WO2011020616A1 (fr)

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KR20120065346A (ko) 2012-06-20
BR112012002769A2 (pt) 2017-02-21
US20120231304A1 (en) 2012-09-13
DE102009038065A1 (de) 2011-02-24
JP2013502677A (ja) 2013-01-24
WO2011020616A1 (fr) 2011-02-24

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