WO2011035991A1 - Battery system for use with an external active cooling device - Google Patents

Battery system for use with an external active cooling device Download PDF

Info

Publication number
WO2011035991A1
WO2011035991A1 PCT/EP2010/061999 EP2010061999W WO2011035991A1 WO 2011035991 A1 WO2011035991 A1 WO 2011035991A1 EP 2010061999 W EP2010061999 W EP 2010061999W WO 2011035991 A1 WO2011035991 A1 WO 2011035991A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery system
housing
cooling plate
battery
cooling device
Prior art date
Application number
PCT/EP2010/061999
Other languages
German (de)
French (fr)
Inventor
Michael Gless
Original Assignee
Sb Limotive Germany Gmbh
Sb Limotive Company 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 Sb Limotive Germany Gmbh, Sb Limotive Company Ltd. filed Critical Sb Limotive Germany Gmbh
Publication of WO2011035991A1 publication Critical patent/WO2011035991A1/en

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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 provides a battery system comprising: i) one or more battery cells;
  • the battery system according to the invention also includes such battery systems that do not themselves comprise a cooling plate, but heat energy from the housing interior to a separate, already at the consumer or in the environment existing cooling plate te or cooling device can transmit.
  • the heat energy produced in the cells is first conducted conductively via passive heat conducting means, such as cooling plates which are contacted with one or more lateral surfaces of the cells, to a cooling plate outside the housing. From there, the heat energy from an external, active
  • Cooling device are absorbed and removed.
  • conventional active cooling devices may be used, such as liquid cooling devices.
  • the battery system according to the invention allows an efficient temperature regulation of the cells of the battery system, while the formation of condensate water inside the housing is avoided.
  • An advantage of the battery system according to the invention is that the electrical components of the Battery system spatially separated from the components that are used for active cooling, such as components that carry liquid coolant, so that the coolant does not enter the housing interior.
  • the battery system according to the invention comprises one or more battery cells.
  • battery system is understood here to mean electrochemical energy stores, in particular batteries or accumulators of all conventional accumulator technologies, batteries or accumulators of the type Pb - lead-acid battery, NiCd-nickel-cadmium battery, NiH2-nickel-hydrogen accumulator, NiMH-nickel Metal Hydride Battery, Li-Ion - Lithium Ion
  • LiPo - Lithium Polymer Battery LiFe - Lithium Metal Battery, Li-Mn - Lithium Manganese Battery, LiFeP0 4 - Lithium Iron Phosphate Battery, LiTi - Lithium Titanate Battery, RAM - Rechargeable Alkaline Manganese, Ni-Fe - Nickel-Iron Battery, Na / NiCI - High Temperature Nickel Nickel Chloride Battery, SCiB - Super Charge Ion Battery, Silver-Zinc Battery, Silicone Battery, Vanadium Redox
  • Accumulator and / or zinc-bromine battery can be used.
  • batteries of the lithium ion, lead acid, nickel cadmium, nickel metal hydride and / or sodium / sodium nickel chloride battery type can be used.
  • Particular preference is given to using batteries of the lithium ion battery type.
  • the term "battery system” is used here for individual cells as well as for modules from a plurality of cells as well as for more complex architectures comprising a plurality of cells and / or modules.Preferredly, the term “battery system” designates energy stores having more than one cell.
  • the battery system includes one or more battery cells disposed in a common housing.
  • a battery system may comprise a single or a plurality of individual housings, each comprising one or more battery cells.
  • the battery system has a common housing, in which all cells or modules of the battery system are arranged, wherein the cooling plate is positioned outside of this common housing.
  • housing is to be understood as meaning a device which has an interior suitable for accommodating one or more battery cells, a housing being permanently or temporarily open to the environment in one or two directions contained battery cells to the environment after all
  • a housing can not be understood to mean the immediate cell envelope that separates the electrochemical constituents of a single cell from the environment.
  • the housing can be made of a material which comprises or consists of a metal, a metal sheet or a ceramic.
  • the housing may be made of a material which comprises aluminum or consists thereof.
  • the battery system according to the invention has at least one cooling plate, which is arranged outside the housing.
  • the battery system may have a plurality of cooling plates arranged outside the housing.
  • One, several or all of the cooling plates of the battery system may be externally attached to a surface of the housing or partially or completely separated from the housing surface. It is essential that at least one surface of the cooling plate is present separately from the housing interior, accessible from outside the housing for dissipating heat energy and that the cooling plate is connected in such a thermally conductive passive heat means with the battery cells arranged inside the housing that heat energy from the battery cells from the housing interior out on the cooling plate is transferable.
  • one, several or all of the cooling plates of the battery system are on one or more
  • the cooling plate may be an integral part of the housing, provided at least one surface of the cooling plate is directly accessible from outside the housing for dissipating heat energy.
  • the cooling plate preferably has a solid surface throughout, which does not permit direct passage into the interior of the housing.
  • At least one surface of the cooling plate may be structured (eg having ribs or fins), so that a heat transfer from the cooling plate to an active cooling device is enabled or optimized. The configuration of this structuring may depend on the type and dimensioning of the desired external, active cooling device.
  • the cooling plate of the battery system is made of a material having a heat transfer coefficient that allows the fastest possible and effective transfer of heat energy from the cooling plate to the fluid used. Corresponding materials are known to the person skilled in the art.
  • the cooling plate preferably comprises or consists of a metal or a ceramic, particularly preferably aluminum.
  • the battery system according to the invention has one or more passive heat conducting means, which are arranged in such a way that thermal energy can be conductively transferred from the battery cells to the cooling plate via the passive heat conducting means.
  • the passive heat conduction can be as large as possible in contact with one or more surfaces of the lateral surface of the battery cells, so that the fastest possible and effective heat transfer from the battery cells to the heat conducting is possible.
  • the passive heat conducting means are designed such that an effective heat transfer is ensured both between the cell and the heat conducting means and between the heat conducting means and the cooling plate.
  • the passive heat conduction of the battery system are made of a material having a heat transfer coefficient, which allow the fastest possible and effective transfer of heat energy from the battery cell to the heat conducting and the heat transfer to the cooling plate used. Corresponding materials are known to the person skilled in the art.
  • the passive heat-conducting means are preferably conventional heat-conducting sheets, particularly preferably heat-conducting sheets which contain or consist of aluminum.
  • the battery system according to the invention also includes such battery systems which do not themselves comprise an active cooling device for absorbing heat energy from the cooling plate, but thermal energy from the housing interior and / or from the cooling plate to a separate, already at
  • the battery system according to the invention can also have its own active cooling device.
  • the active cooling device is outside of the
  • the active cooling device preferably has at least one coolant which is suitable for absorbing heat energy from the cooling plate.
  • the active cooling device preferably has a gaseous, liquid and / or solid coolant.
  • the active cooling device may be configured and operatively connected to the cooling plate such that heat energy from the cooling plate is transferable to a coolant of the active cooling device.
  • the active cooling be executed in such a direction that a coolant of the active cooling device is directly or indirectly contacted with at least one surface of the cooling plate to receive heat energy from the cooling plate.
  • active cooling devices can be used. Preference is given to active cooling devices of the type of heat exchangers, latent heat accumulators and / or direct or indirect fluid flow cooling devices, such as liquid cooling devices or air cooling devices.
  • the present invention also relates to motor vehicles comprising a battery system according to the invention.
  • the term “motor vehicle” is to be understood as meaning all driven vehicles which have an electrochemical energy store, irrespective of which drive these motor vehicles have.
  • the term “motor vehicle” comprises HEV (electric hybrid vehicles), PHEV (plug-in hybrid vehicles), EV (electric vehicles), fuel cell vehicles, as well as all vehicles that use an electrochemical energy store for the electrical power supply.
  • the present invention also relates to a method for cooling a battery system, comprising the steps:

Abstract

The present invention relates to a battery system comprising i) one or more battery cells; ii) a housing in which the battery cells are arranged; iii) a cooling plate arranged outside of the housing; and iv) one or more passive heat conducting means that are arranged such that heat energy can be transmitted from the battery cells via the passive heat conducting means from the housing interior to the cooling plate.

Description

Beschreibung  description
Titel title
Batteriesvstem zur Verwendung mit einer externen aktiven Kühleinrichtunq  Battery system for use with an external active cooling device
Stand der Technik State of the art
Um die Sicherheit, Funktion und Lebensdauer von Batteriesystemen, insbesondere von Lithium-Ionen Batteriesystemen, zu gewährleisten, ist es erforderlich die Zellen innerhalb eines vorgegebenen Temperaturbereichs zu betreiben. Während der Leistungsabgabe entsteht im Wesentlichen Joulsche Wärmeenergie, die durch den elektrischen Strom und den Widerstand der Zelle beschrieben werden kann. Um ein Aufheizen der Zelle über einen kritischen Temperaturschwellenwert hinaus zu vermeiden, muss diese Wärmeenergie effektiv abgeführt werden. Darüber hinaus muss die Temperaturverteilung über die Batteriezelle möglichst homogen sein, d.h. die Temperaturunterschiede sollten nicht mehr als 4 Kelvin betragen. In order to ensure the safety, function and life of battery systems, in particular of lithium-ion battery systems, it is necessary to operate the cells within a predetermined temperature range. During power output, Joule's heat energy essentially arises, which can be described by the electrical current and the resistance of the cell. To avoid heating the cell beyond a critical temperature threshold, this heat energy must be dissipated effectively. In addition, the temperature distribution across the battery cell must be as homogeneous as possible, i. the temperature differences should not exceed 4 Kelvin.
Eine Möglichkeit zur homogenen Temperaturregulation ist die Abfuhr von Wärmeenergie mittels einer aktiven im Batteriegehäuse angeordneten Kühleinrichtung, die direkt eine oder mehrere Batteriezellmanteloberflächen kühlt, z.B. einer Flüssigkeitskühleinrichtung. Ein Problem solcher Anordnungen ist, dass es zu Kondenswasserbildung an den gekühlten Oberflächen innerhalb des Batteriegehäuses kommen kann. Das Kondenswasser stellt aufgrund der elektrochemischen Korrosionsgefahr an den spannungsführenden Metallteilen und der ggf. vorhandenen Elektronik eine große Gefahr für die Lebensdauer und/oder Funktion des Batteriesystems dar. In DE 10 2007 01 1 026 A1 ist eine mögliche Lösung des Problems offenbart. Diese Lösung umfasst die Installation einer Kühlfalle zum Kondensieren und Abführen von Feuchtigkeit aus dem Gehäuse. Die Verwendung einer Kühlfalle verursacht allerdings zusätzliche Kosten, schränkt den Spielraum bei der Dimensio- nierung des Batteriegehäuses ein und kann eine Kondenswasserbildung im Gehäuseinneren nicht völlig ausschließen sondern lediglich das Ausmass an Kondenswasserbildung im Gehäuseinneren vermindern. One possibility for homogeneous temperature regulation is the removal of heat energy by means of an active cooling device arranged in the battery housing, which directly cools one or more battery cell shell surfaces, eg a liquid cooling device. A problem with such arrangements is that condensation can form on the cooled surfaces within the battery case. Due to the electrochemical risk of corrosion on the live metal parts and the electronics that may be present, the condensation water represents a great danger to the life and / or function of the battery system. DE 10 2007 01 1 026 A1 discloses a possible solution to the problem. This solution involves installing a cold trap to condense and remove moisture from the enclosure. The use of a cold trap, however, causes additional costs, restricts the scope in the dimensioning of the battery case and can not completely exclude a condensation inside the housing but only reduce the amount of condensation inside the housing.
Offenbarung der Erfindung Disclosure of the invention
Die vorliegende Erfindung stellt ein Batteriesystem zur Verfügung, umfassend: i) eine oder mehrere Batteriezellen; The present invention provides a battery system comprising: i) one or more battery cells;
ii) ein Gehäuse in dem die Batteriezellen angeordnet sind; und  ii) a housing in which the battery cells are arranged; and
iii) ein oder mehrere passive Wärmeleitmittel, die derart angeordnet sind, dass über die passiven Wärmeleitmittel Wärmeenergie von den Batteriezellen aus dem Gehäuseinneren heraus an eine ausserhalb des Gehäuses angeordnete Kühlplatte übertragbar ist. Die ausserhalb des Gehäuses angeordnete Kühlplatte kann Bestandteil des erfindungsgemäßen Batteriesystems sein. Grundsätzlich umfasst das erfindungsgemäße Batteriesystem auch solche Batteriesysteme, die nicht selbst eine Kühlplatte umfassen, sondern Wärmeenergie aus dem Gehäuseinneren an eine separate, bereits beim Verbraucher oder in der Umgebung vorhandenene Kühlplat- te oder Kühleinrichtung übertragen können.  iii) one or more passive heat conducting means, which are arranged such that thermal energy can be transmitted from the battery cells out of the housing interior to a cooling plate arranged outside the housing via the passive heat conducting means. The cooling plate arranged outside the housing can be part of the battery system according to the invention. Basically, the battery system according to the invention also includes such battery systems that do not themselves comprise a cooling plate, but heat energy from the housing interior to a separate, already at the consumer or in the environment existing cooling plate te or cooling device can transmit.
Die in den Zellen produzierte Wärmeenergie wird zunächst konduktiv über passive Wärmeleitmittel, wie beispielsweise Kühlbleche die mit einer oder mehreren Mantelflächen der Zellen kontaktiert sind, an eine Kühlplatte ausserhalb des Ge- häuses geführt. Von dort kann die Wärmeenergie von einer externen, aktivenThe heat energy produced in the cells is first conducted conductively via passive heat conducting means, such as cooling plates which are contacted with one or more lateral surfaces of the cells, to a cooling plate outside the housing. From there, the heat energy from an external, active
Kühleinrichtung aufgenommen und abgeführt werden. Dazu können konventionelle aktive Kühleinrichtungen verwendet werden, wie z.B. Flüssigkeitskühleinrichtungen. Das erfindungsgemäße Batteriesystem erlaubt eine effiziente Temperaturregulation der Zellen des Batteriesystems, während die Bildung von Kon- denswasser im Gehäuseinneren vermieden wird. Ein Vorteil des erfindungsgemäßen Batteriesystems besteht darin, dass die elektrischen Bestandteile des Batteriesystems räumlich getrennt vorliegen von den Bauteilen, die zur aktiven Kühlung eingesetzt werden, wie z.B. Bauteilen die flüssiges Kühlmittel führen, so dass das Kühlmittel nicht in den Gehäuseinnenraum gelangt. Das erfindungsgemäße Batteriesystem umfasst eine oder mehrere Batteriezellen. Unter dem Begriff„Batteriesystem" werden hier elektrochemische Energiespeicher verstanden, insbesondere Batterien oder Akkumulatoren aller gebräuchlichen Akkumulatortechnologien. Es können Batterien oder Akkumulatoren vom Typ Pb - Bleiakku, NiCd - Nickel-Cadmium-Akku, NiH2 - Nickel-Wasserstoff- Akkumulator, NiMH - Nickel-Metallhydrid-Akkumulator, Li-Ion - Lithium-Ionen-Cooling device are absorbed and removed. For this purpose, conventional active cooling devices may be used, such as liquid cooling devices. The battery system according to the invention allows an efficient temperature regulation of the cells of the battery system, while the formation of condensate water inside the housing is avoided. An advantage of the battery system according to the invention is that the electrical components of the Battery system spatially separated from the components that are used for active cooling, such as components that carry liquid coolant, so that the coolant does not enter the housing interior. The battery system according to the invention comprises one or more battery cells. The term "battery system" is understood here to mean electrochemical energy stores, in particular batteries or accumulators of all conventional accumulator technologies, batteries or accumulators of the type Pb - lead-acid battery, NiCd-nickel-cadmium battery, NiH2-nickel-hydrogen accumulator, NiMH-nickel Metal Hydride Battery, Li-Ion - Lithium Ion
Akku, LiPo - Lithium-Polymer-Akku, LiFe - Lithium-Metall-Akku, Li-Mn - Lithium- Mangan-Akku, LiFeP04 - Lithium-Eisen-Phosphat-Akkumulator, LiTi - Lithium- Titanat-Akku, RAM - Rechargeable Alkaline Manganese, Ni-Fe - Nickel-Eisen- Akku, Na/NiCI - Natrium-Nickelchlorid-Hochtemperaturbatterie, SCiB - Super Charge Ion Battery, Silber-Zink-Akku, Silikon-Akku, Vanadium-Redox-Battery, LiPo - Lithium Polymer Battery, LiFe - Lithium Metal Battery, Li-Mn - Lithium Manganese Battery, LiFeP0 4 - Lithium Iron Phosphate Battery, LiTi - Lithium Titanate Battery, RAM - Rechargeable Alkaline Manganese, Ni-Fe - Nickel-Iron Battery, Na / NiCI - High Temperature Nickel Nickel Chloride Battery, SCiB - Super Charge Ion Battery, Silver-Zinc Battery, Silicone Battery, Vanadium Redox
Akkumulator und/oder Zink-Brom-Akku verwendet werden. Insbesondere können Batterien vom Typ der Lithium-Ionen-, Blei/Säure-, Nickel-Cadmium-, Nickel- Metallhydrid- und/oder Natrium/Natriumnickelchlorid-Batterie eingesetzt werden. Besonders bevorzugt werden Batterien vom Typ der Lithium-Ionen-Batterie ver- wendet. Der Begriff„Batteriesystem" wird dabei sowohl für einzelne Zellen, als auch für Module aus mehreren Zellen, als auch für komplexere Architekturen umfassend mehrere Zellen und/oder Module verwendet. Bevorzugt bezeichnet der Begriff„Batteriesystem" Energiespeicher mit mehr als einer Zelle. Das Batteriesystem umfasst eine oder mehrere Batteriezellen, die in einem gemeinsamen Gehäuse angeordnet sind. Dabei kann ein Batteriesystem ein einziges oder mehrere einzelne Gehäuse umfassen, die jeweils eine oder mehrere Batteriezellen umfassen. Bevorzugt weist das Batteriesystem ein gemeinsames Gehäuse auf, in dem alle Zellen oder Module des Batteriesystems angeordnet sind, wobei die Kühlplatte ausserhalb dieses gemeinsamen Gehäuses positioniert ist. Unter dem Begriff„Gehäuse" ist dabei eine Vorrichtung zu verstehen, die einen Innenraum aufweist, der geeignet ist eine oder mehrere Batteriezellen aufzunehmen. Ein Gehäuse kann dabei in einer oder zwei Richtungen dauerhaft oder vorübergehend gegenüber der Umwelt offen sein. Bevorzugt grenzt das Gehäuse die enthaltenen Batteriezellen gegenüber der Umgebung nach allenAccumulator and / or zinc-bromine battery can be used. In particular, batteries of the lithium ion, lead acid, nickel cadmium, nickel metal hydride and / or sodium / sodium nickel chloride battery type can be used. Particular preference is given to using batteries of the lithium ion battery type. The term "battery system" is used here for individual cells as well as for modules from a plurality of cells as well as for more complex architectures comprising a plurality of cells and / or modules.Preferredly, the term "battery system" designates energy stores having more than one cell. The battery system includes one or more battery cells disposed in a common housing. In this case, a battery system may comprise a single or a plurality of individual housings, each comprising one or more battery cells. Preferably, the battery system has a common housing, in which all cells or modules of the battery system are arranged, wherein the cooling plate is positioned outside of this common housing. The term "housing" is to be understood as meaning a device which has an interior suitable for accommodating one or more battery cells, a housing being permanently or temporarily open to the environment in one or two directions contained battery cells to the environment after all
Richtungen hin vollständig ab, wobei das Gehäuse verschließbare Zugänge, wie z.B. Türen oder Deckel aufweisen kann. Unter einem Gehäuse kann nicht der unmittelbare Zellmantel verstanden werden, der die elektrochemischen Bestandteile einer einzelnen Zelle von der Umwelt trennt. Bevorzugt kann das Gehäuse aus einem Material gefertigt sein, welches ein Metall, ein Metallblech oder eine Keramik umfasst oder daraus besteht. Besonders bevorzugt kann das Gehäuse aus einem Material gefertigt sein, welches Aluminium aufweist oder daraus besteht. Directions completely off, with the housing closable access, such as For example, you may have doors or lids. A housing can not be understood to mean the immediate cell envelope that separates the electrochemical constituents of a single cell from the environment. Preferably, the housing can be made of a material which comprises or consists of a metal, a metal sheet or a ceramic. Particularly preferably, the housing may be made of a material which comprises aluminum or consists thereof.
Das erfindungsgemäße Batteriesystem weist mindestens eine Kühlplatte auf, die ausserhalb des Gehäuses angeordnet ist. Das Batteriesystem kann mehrere ausserhalb des Gehäuses angeordnete Kühlplatten aufweisen. Eine, mehrere oder alle Kühlplatten des Batteriesystems können aussen an einer Oberfläche des Gehäuses angebracht sein oder teilweise oder ganz separiert von der Gehäuseoberfläche vorliegen. Wesentlich ist, dass mindestens eine Oberfläche der Kühlplatte vom Gehäuseinneren getrennt vorliegt, von ausserhalb des Gehäuses zum Abführen von Wärmeenergie zugänglich ist und dass die Kühlplatte derart wärmeleitend über passive Wärmemittel mit den im Gehäuseinneren angeordneten Batteriezellen verbunden ist, dass Wärmeenegie von den Batteriezellen aus dem Gehäuseinneren heraus an die Kühlplatte übertragbar ist. Bevorzugt sind eine, mehrere oder alle Kühlplatten des Batteriesystems auf einer oder mehrerenThe battery system according to the invention has at least one cooling plate, which is arranged outside the housing. The battery system may have a plurality of cooling plates arranged outside the housing. One, several or all of the cooling plates of the battery system may be externally attached to a surface of the housing or partially or completely separated from the housing surface. It is essential that at least one surface of the cooling plate is present separately from the housing interior, accessible from outside the housing for dissipating heat energy and that the cooling plate is connected in such a thermally conductive passive heat means with the battery cells arranged inside the housing that heat energy from the battery cells from the housing interior out on the cooling plate is transferable. Preferably, one, several or all of the cooling plates of the battery system are on one or more
Aussenseiten des Gehäusebodens angebracht. Die Kühlplatte kann integraler Bestandteil des Gehäuses sein, vorausgesetzt mindestens eine Oberfläche der Kühlplatte ist von ausserhalb des Gehäuses direkt zugänglich zum Abführen von Wärmeenergie. Bevorzugt weist die Kühlplatte eine durchgehend solide ausges- taltete Oberfläche auf, die keinen direkten Durchläse in das Gehäuseinnere erlaubt. Mindestens eine Oberfläche der Kühlplatte kann strukturiert sein (z.B. Rippen oder Lamellen aufweisen), so dass ein Wärmeübertrag von der Kühlplatte an eine aktive Kühleinrichtung ermöglicht oder optimiert ist. Die Ausgestaltung dieser Strukturierung kann von der Art und Dimensionierung der gewünschten ex- ternen, aktiven Kühleinrichtung abhängen. Die Kühlplatte des Batteriesystems ist aus einem Material gefertigt, welches eine Wärmeübergangszahl aufweist, die eine möglichst schnelle und effektive Übertragung von Wärmeenergie von der Kühlplatte auf das verwendete Fluid erlaubt. Entsprechende Materialien sind dem Fachmann bekannt. Bevorzugt weist die Kühlplatte ein Metall oder eine Keramik, besonders bevorzugt Aluminium, auf oder besteht daraus. Das erfindungsgemäße Batteriesystem weist ein oder mehrere passive Wärmeleitmittel auf, die derart angeordnet sind, dass über die passiven Wärmeleitmittel Wärmeenergie konduktiv von den Batteriezellen an die Kühlplatte übertragbar ist. Dazu können die passiven Wärmeleitmittel möglichst grossflächig mit einer oder mehreren Oberflächen der Mantelfläche der Batteriezellen in Kontakt stehen, so dass ein möglichst schneller und effektiver Wärmeübertrag von den Batteriezellen auf die Wärmeleitmittel möglich ist. Die passiven Wärmeleitmittel sind dabei derart ausgeführt, dass ein effektiver Wärmeübertrag sowohl zwischen Zelle und Wärmeleitmittel als auch zwischen Wärmeleitmittel und Kühlplatte gewährleistet ist. Die passiven Wärmeleitmittel des Batteriesystems sind aus einem Material gefertigt, dass eine Wärmeübergangszahl aufweist, die eine möglichst schnelle und effektive Übertragung von Wärmeenergie von der Batteriezelle auf das Wärmeleitmittel und vom Wärmeleitmittel auf die verwendete Kühlplatte erlauben. Entsprechende Materialien sind dem Fachmann bekannt. Bevorzugt handelt es sich bei den passiven Wärmeleitmitteln um herkömmliche Wärmeleitbleche, besonders bevorzugt um Wärmeleitbleche, die Aluminium enthalten oder daraus bestehen. Outside of the case bottom attached. The cooling plate may be an integral part of the housing, provided at least one surface of the cooling plate is directly accessible from outside the housing for dissipating heat energy. The cooling plate preferably has a solid surface throughout, which does not permit direct passage into the interior of the housing. At least one surface of the cooling plate may be structured (eg having ribs or fins), so that a heat transfer from the cooling plate to an active cooling device is enabled or optimized. The configuration of this structuring may depend on the type and dimensioning of the desired external, active cooling device. The cooling plate of the battery system is made of a material having a heat transfer coefficient that allows the fastest possible and effective transfer of heat energy from the cooling plate to the fluid used. Corresponding materials are known to the person skilled in the art. The cooling plate preferably comprises or consists of a metal or a ceramic, particularly preferably aluminum. The battery system according to the invention has one or more passive heat conducting means, which are arranged in such a way that thermal energy can be conductively transferred from the battery cells to the cooling plate via the passive heat conducting means. For this purpose, the passive heat conduction can be as large as possible in contact with one or more surfaces of the lateral surface of the battery cells, so that the fastest possible and effective heat transfer from the battery cells to the heat conducting is possible. The passive heat conducting means are designed such that an effective heat transfer is ensured both between the cell and the heat conducting means and between the heat conducting means and the cooling plate. The passive heat conduction of the battery system are made of a material having a heat transfer coefficient, which allow the fastest possible and effective transfer of heat energy from the battery cell to the heat conducting and the heat transfer to the cooling plate used. Corresponding materials are known to the person skilled in the art. The passive heat-conducting means are preferably conventional heat-conducting sheets, particularly preferably heat-conducting sheets which contain or consist of aluminum.
Grundsätzlich umfasst das erfindungsgemäße Batteriesystem auch solche Batte- riesysteme, die nicht selbst eine aktive Kühleinrichtung zur Aufnahme von Wärmeenergie von der Kühlplatte umfassen, sondern Wärmeenergie aus dem Gehäuseinneren und/oder von der Kühlplatte an eine separate, bereits beim In principle, the battery system according to the invention also includes such battery systems which do not themselves comprise an active cooling device for absorbing heat energy from the cooling plate, but thermal energy from the housing interior and / or from the cooling plate to a separate, already at
Verbraucher oder in der Umgebung vorhandenene Kühleinrichtung übertragen können. Das erfindungsgemäße Batteriesystem kann aber auch eine eigene ak- tive Kühleinrichtung aufweisen. Die aktive Kühleinrichtung ist ausserhalb desConsumers or in the environment existing cooling device can transmit. However, the battery system according to the invention can also have its own active cooling device. The active cooling device is outside of the
Gehäuses angeordnet und derart ausgestaltet, dass mittels der aktiven Kühleinrichtung Wärmeenergie von der Kühlplatte abführbar ist. Unter einer aktiven Kühleinrichtung ist dabei eine Kühleinrichtung zu verstehen, die aktiv dafür sorgen kann, dass Wärmeenergie von der Kühlplatte abgeführt wird. Meist ist ein Energieaufwand notwendig, um eine aktive Kühleinrichtung zu betreiben. Bevorzugt weist die aktive Kühleinrichtung mindestens ein Kühlmittel auf, welches geeignet ist Wärmeenergie von der Kühlplatte aufzunehmen. Bevorzugt weist die aktive Kühleinrichtung ein gasförmiges, flüssiges und/oder festes Kühlmittel auf. Die aktive Kühleinrichtung kann derart ausgestaltet sein und mit der Kühlplatte funktional verbunden sein, dass Wärmeenergie von der Kühlplatte auf ein Kühlmittel der aktiven Kühleinrichtung übertragbar ist. Dabei kann die aktive Kühlein- richtung derart ausgeführt sein, dass ein Kühlmittel der aktiven Kühleinrichtung direkt oder indirekt mit mindestens einer Oberfläche der Kühlplatte kontaktierbar ist, um Wärmeenergie von der Kühlplatte aufzunehmen. Grundsätzlich können alle Typen aktiver Kühleinrichtungen verwendet werden. Bevorzugt sind aktive Kühleinrichtungen vom Typ der Wärmetauscher, Latentwärmespeicher und/oder direkter oder indirekter Fluidstromkühleinrichtungen wie beispielsweise Flüssigkeitskühleinrichtungen oder Luftkühleinrichtungen. Housing arranged and configured such that by means of the active cooling device heat energy can be dissipated from the cooling plate. Under an active cooling device is a cooling device to understand that can actively ensure that heat energy is removed from the cooling plate. Most energy is required to operate an active cooling device. The active cooling device preferably has at least one coolant which is suitable for absorbing heat energy from the cooling plate. The active cooling device preferably has a gaseous, liquid and / or solid coolant. The active cooling device may be configured and operatively connected to the cooling plate such that heat energy from the cooling plate is transferable to a coolant of the active cooling device. The active cooling be executed in such a direction that a coolant of the active cooling device is directly or indirectly contacted with at least one surface of the cooling plate to receive heat energy from the cooling plate. In principle, all types of active cooling devices can be used. Preference is given to active cooling devices of the type of heat exchangers, latent heat accumulators and / or direct or indirect fluid flow cooling devices, such as liquid cooling devices or air cooling devices.
Die vorliegende Erfindung bezieht sich auch auf Kraftfahrzeuge, die ein erfindungsgemäßes Batteriesystem umfassen. Dabei sind unter dem Begriff„Kraftfahrzeug" alle angetriebenen Fahrzeuge zu verstehen, die einen elektrochemischen Energiespeicher aufweisen, unabhängig davon welchen Antrieb diese Kraftfahrzeuge aufweisen. Insbesondere umfasst der Begriff„Kraftfahrzeug" HEV (elektrische Hybridfahrzeuge), PHEV (Plug-In-Hybridfahrzeuge), EV (Elektrofahr- zeuge), Brennstoffzellenfahrzeuge, sowie alle Fahrzeuge, die einen elektrochemischen Energiespeicher für die elektrische Energieversorgung einsetzen. The present invention also relates to motor vehicles comprising a battery system according to the invention. In this case, the term "motor vehicle" is to be understood as meaning all driven vehicles which have an electrochemical energy store, irrespective of which drive these motor vehicles have.in particular, the term "motor vehicle" comprises HEV (electric hybrid vehicles), PHEV (plug-in hybrid vehicles), EV (electric vehicles), fuel cell vehicles, as well as all vehicles that use an electrochemical energy store for the electrical power supply.
Die vorliegende Erfindung bezieht sich auch auf ein Verfahren zur Kühlung eines Batteriesystems, umfassend die Schritte: The present invention also relates to a method for cooling a battery system, comprising the steps:
a) Abführen, bevorzugt passives Abführen, von Wärmeenergie einer, mehrerer oder aller Zellen, die in einem Gehäuse eines Batteriesystems angeordnet sind, an eine ausserhalb des Gehäuses angeordnete Kühlplatte; a) discharging, preferably passive removal, of thermal energy of one, several or all cells, which are arranged in a housing of a battery system, to a cooling plate arranged outside the housing;
b) Abführen von Wärmeenergie von der Kühlplatte mittels einer ausserhalb des Gehäuses angeordneten aktiven Kühleinrichtung. b) discharging heat energy from the cooling plate by means of an outside of the housing arranged active cooling device.

Claims

Ansprüche claims
1 . Batteriesystem, umfassend 1 . Battery system comprising
i) eine oder mehrere Batteriezellen;  i) one or more battery cells;
ii) ein Gehäuse in dem die Batteriezellen angeordnet sind; und  ii) a housing in which the battery cells are arranged; and
iii) ein oder mehrere passive Wärmeleitmittel, die derart angeordnet sind, dass über die passiven Wärmeleitmittel Wärmeenergie von den Batteriezellen aus dem Gehäuseinneren heraus an eine ausserhalb des Gehäuses angeordnete Kühlplatte übertragbar ist.  iii) one or more passive heat conducting means, which are arranged such that thermal energy can be transmitted from the battery cells out of the housing interior to a cooling plate arranged outside the housing via the passive heat conducting means.
2. Batteriesystem nach Anspruch 1 , dadurch gekennzeichnet, dass das Batteriesystem eine ausserhalb des Gehäuses angeordnete Kühlplatte umfasst. 2. Battery system according to claim 1, characterized in that the battery system comprises a cooling plate arranged outside the housing.
3. Batteriesystem nach Anspruch 2, dadurch gekennzeichnet, dass die Kühlplatte mindestens teilweise eine strukturierte Oberfläche aufweist. 3. Battery system according to claim 2, characterized in that the cooling plate has at least partially a structured surface.
4. Batteriesystem nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass die Kühlplatte in mindestens eine der Aussenoberflächen des Gehäuses integriert vorliegt. 4. Battery system according to one of claims 2 or 3, characterized in that the cooling plate is integrated in at least one of the outer surfaces of the housing.
5. Batteriesystem nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass die Kühlplatte teilweise oder ganz von der Gehäuseoberfläche separiert vorliegt. 5. Battery system according to one of claims 2 or 3, characterized in that the cooling plate is partially or completely separated from the housing surface.
6. Batteriesystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Batteriesystem zusätzlich eine aktive Kühleinrichtung aufweist, welche ausserhalb des Gehäuses angeordnet und derart ausgestaltet ist, dass Wärmeenergie von der Kühlplatte abführbar ist. 6. Battery system according to one of the preceding claims, characterized in that the battery system additionally comprises an active cooling device, which is arranged outside the housing and configured such that heat energy can be dissipated from the cooling plate.
7. Batteriesystem nach Anspruch 5, dadurch gekennzeichnet, dass die aktive Kühleinrichtung ein gasförmiges, flüssiges und/oder festes Kühlmittel aufweist. 7. Battery system according to claim 5, characterized in that the active cooling device comprises a gaseous, liquid and / or solid coolant.
8. Batteriesystem nach einem der Ansprüche 6 bis 7, dadurch gekennzeichnet, dass die aktive Kühleinrichtung derart ausgestaltet ist, dass ein Kühlmittel direkt oder indirekt mit mindestens einer Oberfläche der Kühlplatte kontaktier- bar ist. 8. Battery system according to one of claims 6 to 7, characterized in that the active cooling device is configured such that a coolant can be contacted directly or indirectly with at least one surface of the cooling plate bar.
9. Batteriesystem nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die aktive Kühleinrichtung einen Wärmetauscher, einen Latentwärmespeicher und/oder eine direkte oder indirekte Fluidstromkühleinrichtung aufweist. 9. Battery system according to one of claims 6 to 8, characterized in that the active cooling device comprises a heat exchanger, a latent heat storage and / or a direct or indirect fluid flow cooling device.
10. Kraftfahrzeug umfassend ein Batteriesystem nach einem der Ansprüche 1 bis 9. 10. Motor vehicle comprising a battery system according to one of claims 1 to 9.
1 1 . Verfahren zur Kühlung eines Batteriesystems, umfassend die Schritte: 1 1. A method of cooling a battery system comprising the steps of:
a) Abführen von Wärmeenergie einer, mehrerer oder aller Zellen, die in einem Gehäuse eines Batteriesystems angeordnet sind, an eine ausserhalb des Gehäuses angeordnete Kühlplatte;  a) dissipation of heat energy of one, several or all cells, which are arranged in a housing of a battery system, to a cooling plate arranged outside the housing;
b) Abführen von Wärmeenergie von der Kühlplatte mittels einer ausserhalb des Gehäuses angeordneten aktiven Kühleinrichtung.  b) discharging heat energy from the cooling plate by means of an outside of the housing arranged active cooling device.
PCT/EP2010/061999 2009-09-25 2010-08-18 Battery system for use with an external active cooling device WO2011035991A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009045007A DE102009045007A1 (en) 2009-09-25 2009-09-25 Battery system for use with an external active cooling device
DE102009045007.6 2009-09-25

Publications (1)

Publication Number Publication Date
WO2011035991A1 true WO2011035991A1 (en) 2011-03-31

Family

ID=43037884

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/061999 WO2011035991A1 (en) 2009-09-25 2010-08-18 Battery system for use with an external active cooling device

Country Status (2)

Country Link
DE (1) DE102009045007A1 (en)
WO (1) WO2011035991A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730706A (en) * 2012-10-11 2014-04-16 大众汽车有限公司 Method and device for preventing or reducing moisture condensation state of electric component
US11031536B2 (en) 2015-06-10 2021-06-08 Gentherm Incorporated Vehicle battery thermoelectric device with integrated cold plate assembly and method of assembling same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014114023A1 (en) 2014-09-26 2016-03-31 Obrist Technologies Gmbh battery system
DE102015216029A1 (en) * 2015-08-21 2017-02-23 Robert Bosch Gmbh battery Pack

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0745310A (en) * 1991-05-31 1995-02-14 Honda Motor Co Ltd Battery
JPH11204151A (en) * 1998-01-08 1999-07-30 Nissan Motor Co Ltd Battery cooling device of electric vehicle
US20030017383A1 (en) * 2000-04-14 2003-01-23 Hironori Ura Battery pack
JP2003197277A (en) * 2001-12-25 2003-07-11 Honda Motor Co Ltd Battery and vehicle driving device
DE10214367A1 (en) * 2002-03-30 2003-10-16 Bosch Gmbh Robert Energy storage module and electrical device
US6653002B1 (en) * 1997-05-09 2003-11-25 Ronald J. Parise Quick charge battery with thermal management
US20070259258A1 (en) * 2006-05-04 2007-11-08 Derrick Scott Buck Battery assembly with temperature control device
DE102007011026A1 (en) 2007-03-07 2008-09-11 Daimler Ag Battery for motor vehicle, particularly hybrid vehicle or gas fuel vehicle, has battery housing, in which battery cells are arranged and active cooling equipment is provided to cool battery cells in housing
JP2009099305A (en) * 2007-10-15 2009-05-07 Sanyo Electric Co Ltd Power supply device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2047787A1 (en) * 1969-09-30 1971-11-18 Westinghouse Electric Corp BATTERY WITH A DEVICE TO CHANGE YOUR TEMPERATURE
DE8814571U1 (en) * 1988-11-22 1989-01-05 Saft Akkumulatoren Und Batterien Gmbh, 8752 Mainaschaff, De
JP3867060B2 (en) * 2003-03-28 2007-01-10 三菱電機株式会社 Vehicle power supply system
US8734977B2 (en) * 2005-03-25 2014-05-27 Samsung Sdi Co., Ltd. Battery module

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0745310A (en) * 1991-05-31 1995-02-14 Honda Motor Co Ltd Battery
US6653002B1 (en) * 1997-05-09 2003-11-25 Ronald J. Parise Quick charge battery with thermal management
JPH11204151A (en) * 1998-01-08 1999-07-30 Nissan Motor Co Ltd Battery cooling device of electric vehicle
US20030017383A1 (en) * 2000-04-14 2003-01-23 Hironori Ura Battery pack
JP2003197277A (en) * 2001-12-25 2003-07-11 Honda Motor Co Ltd Battery and vehicle driving device
DE10214367A1 (en) * 2002-03-30 2003-10-16 Bosch Gmbh Robert Energy storage module and electrical device
US20070259258A1 (en) * 2006-05-04 2007-11-08 Derrick Scott Buck Battery assembly with temperature control device
DE102007011026A1 (en) 2007-03-07 2008-09-11 Daimler Ag Battery for motor vehicle, particularly hybrid vehicle or gas fuel vehicle, has battery housing, in which battery cells are arranged and active cooling equipment is provided to cool battery cells in housing
JP2009099305A (en) * 2007-10-15 2009-05-07 Sanyo Electric Co Ltd Power supply device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730706A (en) * 2012-10-11 2014-04-16 大众汽车有限公司 Method and device for preventing or reducing moisture condensation state of electric component
DE102012019943A1 (en) 2012-10-11 2014-04-17 Volkswagen Aktiengesellschaft Method for preventing/reducing condensation dew formation in electric component for e.g. electric vehicle, involves increasing coolant temperature and reducing power output of electric component, when condensation probability is larger
DE102012019943B4 (en) * 2012-10-11 2020-11-26 Volkswagen Aktiengesellschaft Method and device for avoiding or reducing condensation in or on an electrical component
US11031536B2 (en) 2015-06-10 2021-06-08 Gentherm Incorporated Vehicle battery thermoelectric device with integrated cold plate assembly and method of assembling same

Also Published As

Publication number Publication date
DE102009045007A1 (en) 2011-03-31

Similar Documents

Publication Publication Date Title
EP2389705B1 (en) Temperature-controlled battery system ii
DE102014203715B4 (en) Efficiently coolable housing for a battery module
EP0917230B1 (en) Battery with temperature conditionning system
DE102010017561B4 (en) Cooling device for a battery
WO2008106946A2 (en) Power storage cell with heat conducting plate
DE112017005209B4 (en) Battery device
DE102016106171A1 (en) BUSBAR ASSEMBLY FOR A VEHICLE TRACTION BATTERY
WO2011035990A1 (en) Thermal decoupling of adjacent cells in a battery system
DE102015202563A1 (en) TRACTION BATTERY HEATING PLATE WITH LENGTH CHANNEL CONFIGURATION
DE102009016867A1 (en) Accumulator with extended life
US9819062B2 (en) Traction battery assembly with thermal device
DE102013218674A1 (en) Battery cell, battery and vehicle
DE102015115138A1 (en) Traction battery assembly
EP2486621A1 (en) Energy storage unit having extended service life
WO2017060152A1 (en) Drive battery assembly
DE102013012164A1 (en) Traction battery system and method for heating a high voltage battery of a traction battery system
DE102015104264A1 (en) TRACTION BATTERY ASSEMBLY WITH SPRING COMPONENT
DE202008012599U1 (en) battery module
CN106067529A (en) Traction battery assembly
WO2011035991A1 (en) Battery system for use with an external active cooling device
DE102015116104A1 (en) ASSEMBLY GROUP FOR PRODUCING CONTACT BETWEEN A BATTERY CELL ARRAY AND A THERMALLY CONDUCTIVE INTERMEDIATE COMPONENT OF A HEAT PLATE
DE102015203136A1 (en) Traction battery heat conduction plate with cross channel configuration
DE102014019074A1 (en) Cell block for a motor vehicle battery
DE102009045012A1 (en) Battery system with external impingement cooling
DE102009000392A1 (en) Air conditioning electrochemical energy storage by means of adjustable latent heat storage

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10742851

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 10742851

Country of ref document: EP

Kind code of ref document: A1