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EP2525992A2 - Système de refroidissement pour la batterie d'un véhicule électrique - Google Patents

Système de refroidissement pour la batterie d'un véhicule électrique

Info

Publication number
EP2525992A2
EP2525992A2 EP11700798A EP11700798A EP2525992A2 EP 2525992 A2 EP2525992 A2 EP 2525992A2 EP 11700798 A EP11700798 A EP 11700798A EP 11700798 A EP11700798 A EP 11700798A EP 2525992 A2 EP2525992 A2 EP 2525992A2
Authority
EP
European Patent Office
Prior art keywords
cooling
heat
battery
liquid
region
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Withdrawn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
EP11700798A
Other languages
German (de)
English (en)
Inventor
Franz Kind
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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 Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP2525992A2 publication Critical patent/EP2525992A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • H01M10/62—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
    • H01M10/656—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
    • 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
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a cooling system for the battery of an electric vehicle.
  • the battery of an electric vehicle provides the energy required for the operation of the electric vehicle. It is the only source of energy and usually has a large majority of cells, e.g. in the form of lithium-ion cells, on. In order to ensure a sufficient service life of the battery, it is necessary to cool the battery of the electric vehicle during operation of the electric vehicle sufficiently and as homogeneously as possible. At too high temperatures, the cells of the battery age much faster and their performance and capacity decreases. The cooling of the battery is carried out in known electric vehicles mostly by means of cooled air, e.g. the air-conditioned passenger compartment is removed. Especially at peak loads, e.g. When braking and accelerating the electric vehicle, the battery has to provide high performance in a very short time.
  • the present invention is therefore an object of the invention to provide a cooling system for the battery of an electric vehicle, which is used in addition to known cooling devices and with which the life of the battery can be significantly extended.
  • Invention-like solution is therefore an object of the invention to provide a cooling system for the battery of an electric vehicle, which is used in addition to known cooling devices and with which the life of the battery can be significantly extended.
  • the cooling system according to the invention for the battery of an electric vehicle has at least one latent heat accumulator with a storage medium.
  • a latent heat accumulator is known to be a heat accumulator which is designed to hide thermal energy ("latent” from Latin “latere” means to be “hidden”), to conserve low losses, with many repetitive cycles and over a long period of time Change "materials or” phase change materials "(abbr .: PCM), the latent heat of fusion, solution heat or heat of absorption is substantially greater than the specific heat capacity of the same amount of a substance without phase transformation.
  • Latent heat storage therefore work by utilizing the enthalpy of reversible thermodynamic changes in state of the storage medium, such as the solid-liquid phase transition (solidification / melting), the use of the solid-liquid phase transition is very often applied.
  • the storage medium of the latent heat storage of the cooling system according to the invention is cooled by transfer of heat to a cooling medium, wherein the storage medium preferably has a phase transition temperature for the solid-liquid phase transition, which is within a range of 253 degrees Kelvin to 293 degrees Kelvin, preferably within a range of 263 Degrees Kelvin to 280 degrees Kelvin.
  • the storage medium is preferably enclosed in a dimensionally stable thermally insulated storage container.
  • a dimensionally stable thermally insulated storage container can consist purely of water or of an electic mixture of water with at least one salt or also of a low-glycol water mixture with glycol as antifreeze.
  • An advantageous salt-water mixture consists of 19.5% KCl / H 2 O (with KCl equal to potassium chloride and H 2 0 equal to water).
  • the reduction of the specific heat of fusion by the additives compared to pure water is of no importance due to the low concentration in the application.
  • a suspension of ice crystals is thus formed in the brine solution, which admittedly has a considerable change in volume during freezing but reliably avoids the otherwise usual explosive effect of freezing water.
  • the storage medium in the case of a storage medium made entirely of water, the storage medium so that the water level with the container encloses a buffer area which compensates for the thermal and phase change conditional expansions of the water.
  • the storage medium is embedded in a matrix of thermally highly conductive material such as graphite.
  • any cooling medium can be provided, such as outside air flowing into the engine area of the electric vehicle during driving or air led out of a cooled passenger compartment.
  • the storage medium by means of the cooling medium to complete solidification, a large amount of heat can be withdrawn, which can be taken in a melting process of the storage medium again.
  • the storage medium of the latent heat accumulator has at least one heat-transmitting connection to a cooling circuit, which can be flowed through by a cooling liquid accommodated in the cooling circuit.
  • the cooling liquid Via the heat-transferring connection of the storage medium to the cooling circuit, the cooling liquid can be cooled very effectively by transfer of heat energy to the cooled storage medium.
  • a large amount of heat of the cooling liquid can be transferred to the storage medium.
  • the cooling liquid accommodated in the cooling circuit thus represents by appropriate cooling by means of the storage medium a heat source with a correspondingly lowered temperature.
  • a heat source with a correspondingly lowered temperature.
  • the cooling circuit with at least a portion of the battery, which comprises at least one cell of the battery, for transferring heat energy to the cooled cooling liquid is heat-transferable connectable.
  • a heat-transferable connection of the cooling circuit with at least one region of the battery the heat energy absorbed or stored in the region of the battery can be transferred to the cooled cooling liquid and the region can be cooled.
  • quantities of the cooling liquid heated by the cooling of the region of the battery can be supplied to the heat-transferring connection of the cooling circuit with the storage medium in order to cool these quantities.
  • the cooling circuit may have a conveyor, for example in the form of a circulating pump.
  • the cooling circuit can also be connected in a heat-transferring manner to a region of the battery which comprises all cells of the battery, accompanied by cooling which virtually or substantially covers the entire battery.
  • cooling of the cooling liquid is possible by providing the latent heat accumulator, which is almost independent of comparatively short-term operating changes of the electric vehicle due to the characteristics of the latent heat accumulator or the storage medium, a correspondingly very stable and effective cooling of at least one region of the battery is thus also possible possible, which supports a commonly provided battery cooling or battery cooling device very effective, along with a substantial extension of the life of the battery.
  • the plurality of separate cooling circuits targeted individual different areas, ie in particular spaced apart or adjacent areas of the battery can be monitored, such that when a critical temperature of a range is exceeded, a flow of the cooling circuit is caused, which connects heat-transmitting with this area is, along with a cooling or counter cooling of this area.
  • the plurality of separate cooling circuits may preferably be fed by a central cooling circuit, wherein it is further preferably provided that the cooling circuits separated from each other can be selectively flowed through by means of valves with the cooling liquid. In particular, it is possible to possibly burn through one or more cells, the usually precedes a strong increase in temperature, to be avoided by appropriate countercooling or cooling of the respective area.
  • all of these areas in their entirety may comprise the entire battery or substantially the entire battery, such that the sum of the cells of all areas corresponds to the total number of cells of the battery or substantially the total number of cells of the battery.
  • the invention further relates to an electric vehicle with a cooling system according to the invention.
  • an air-liquid heat exchanger with a blower is provided for providing the heat-transmitting connection of the cooling circuit to the region of the battery, wherein the air-liquid heat exchanger can be flowed through by the cooling liquid and the blower is set up, to direct the cooled air in the flow of the air-liquid heat exchanger to the area.
  • a practical air cooling of the respective battery area is possible.
  • FIGURE very schematically shows a cooling system 10 according to the invention with two cooling circuits 12, each of which is heat-transmittingly connected to one of two spatially separated regions 1 of a battery 16 of an electric vehicle.
  • the cooling system 10 shown in the figure for the battery 16 of an electric vehicle has a latent heat storage 18 with a storage medium 20.
  • the storage medium 20 can be cooled by transfer of heat to a cooling medium 22, as symbolized in the figure by the arrow.
  • the cooling medium 22 can serve any cooling medium 22, such as during the driving operation in the engine area of the electric vehicle incoming outside air or led out of a cooled passenger compartment air.
  • the cooling medium 22 may be formed by the evaporator region of a heat pump, preferably through the evaporator region of a heat pump with C0 2 as the refrigerant.
  • the cooling system 10 has two separate cooling circuits 12, wherein each cooling circuit 12 by a cooling liquid (not shown in detail) can be flowed through and a circulation pump 24 has to circulate the cooling liquid in the cooling circuit 12.
  • the cooling circuits 12 need not be spatially separated as illustrated in the figure. They can also have common sections. According to the invention, it is provided that the cooling circuits are only separated from one another, which means that in each circuit, a circulation of cooling liquid which is independent or separate from the other circuits is possible, ie in particular also a circulation in only one of the cooling circuits.
  • the storage medium 20 has, for each of the two cooling circuits 12, a schematically illustrated heat-transferring connection 26, which is provided for cooling the cooling liquid by transferring heat energy to the cooled storage medium 20.
  • the heat-transferring connection 26 shown here only schematically can be formed or provided in any desired manner. In particular, the heat transferring connection 26 may be provided by contact of the storage medium 20 to a portion of the refrigeration cycle 12.
  • Each cooling circuit 12 has a heat transferring connection 26 to a region 14 of the battery in the form of a battery chamber 14.
  • Each battery chamber 14 has sixteen cells 27 in the form of lithium-ion cells 27 in this embodiment.
  • the heat-transmitting connection 26 of one of the cooling circuits 12 to the region 14 of the battery can be designed or provided in any desired manner.
  • this heat-transferring connection can be provided by a metallic cooling element (not shown here), which can be flowed through by the cooling liquid as part of the cooling circuit 12 and which at least partially has contact with the region 14 or with the cells of the region 14.
  • a temperature sensor 28 is provided, which is attached to measure the temperature of the region 14 at this.
  • the cooling system 10 further comprises a control device 30, which is set up to compare the measured temperature of each of the two regions 14 with a predetermined maximum value. As soon as the measured temperature of one or both regions 14 exceeds the maximum value, the control device 30 causes a flow through the corresponding cooling circuit 12 or a flow through both cooling circuits 12 with the cooled cooling liquid by activation of the circulation pump 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un système de refroidissement (10) pour la batterie (16) d'un véhicule électrique, avec au moins un accumulateur de chaleur latente (18) qui comprend un milieu accumulateur (20), celui-ci pouvant être refroidi par le transfert de la chaleur à un fluide de refroidissement (22), et avec au moins un circuit de refroidissement (12) qui est parcouru par un fluide de refroidissement présent dans le circuit de refroidissement (12). Le milieu accumulateur (20) possède au moins une liaison de conduction thermique (26) avec le circuit de refroidissement (12), prévue pour refroidir le liquide de refroidissement par le transféert de l'énergie thermique au milieu accumulateur (20) refroidi. Le circuit de refroidissement (12) est relié de manière thermoconductrice avec au moins une partie (14) de la batterie (16) afin de transférer de l'énergie thermique au liquide de refroidissement refroidi. La partie (14) comprend au moins une cellule de la batterie (16).
EP11700798A 2010-01-21 2011-01-13 Système de refroidissement pour la batterie d'un véhicule électrique Withdrawn EP2525992A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010001201U DE202010001201U1 (de) 2010-01-21 2010-01-21 Kühlsystem für die Batterie eines Elektrofahrzeugs
PCT/EP2011/000118 WO2011088968A2 (fr) 2010-01-21 2011-01-13 Système de refroidissement pour la batterie d'un véhicule électrique

Publications (1)

Publication Number Publication Date
EP2525992A2 true EP2525992A2 (fr) 2012-11-28

Family

ID=44278998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11700798A Withdrawn EP2525992A2 (fr) 2010-01-21 2011-01-13 Système de refroidissement pour la batterie d'un véhicule électrique

Country Status (3)

Country Link
EP (1) EP2525992A2 (fr)
DE (1) DE202010001201U1 (fr)
WO (1) WO2011088968A2 (fr)

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DE102012011511A1 (de) 2012-06-09 2013-12-12 Volkswagen Aktiengesellschaft Batteriesystem mit einem Klimatisierungssystem
DE102012210180A1 (de) * 2012-06-18 2013-12-19 Denso Automotive Deutschland Gmbh Klimaanlage mit Kühlwasserkreislauf
DE102012220218A1 (de) 2012-11-07 2014-05-08 Continental Automotive Gmbh Verfahren zum Laden einer Start- oder Traktionsbatterie eines Hybrid- oder Elektrokraftfahrzeugs sowie Fahrzeugkupplungsstück, Fahrzeugkupplungsanordnung, Batterieeinrichtung, Ladestationskupplung und Ladestation zur Ausführung des Verfahrens.
PL3025890T3 (pl) * 2014-11-27 2018-11-30 Sandvik Mining And Construction Oy System chłodzenia oraz sposób
DE102015219089A1 (de) * 2015-10-02 2017-04-06 Bayerische Motoren Werke Aktiengesellschaft Kraftfahrzeug
CN106252790B (zh) * 2016-09-18 2019-02-15 广东工业大学 一种动力电池热管理系统
FR3103145B1 (fr) * 2019-11-20 2021-11-19 Psa Automobiles Sa Procede de diagnostic thermique pour la detection d’une anomalie de fonctionnement d’un circuit electrique de vehicule automobile
IT201900024826A1 (it) * 2019-12-19 2021-06-19 Ind Saleri Italo Spa Assieme di gestione termica di un veicolo
CN111786056B (zh) * 2020-07-13 2022-09-23 重庆广播电视大学重庆工商职业学院 用于纯电动汽车动力单元的电池冷却板
DE102021105378A1 (de) * 2021-03-05 2022-09-08 Volocopter Gmbh Verfahren zur Kühlung einer Batterie und Kühlsystem
CN113270662B (zh) * 2021-05-18 2023-06-23 南京培克电站设备有限公司 一种基于全密封和真空相变传热的安全储能电池箱及其制备方法
DE102022131334B4 (de) * 2022-11-28 2025-09-04 Schaeffler Technologies AG & Co. KG Thermomanagement-System, elektrischer Achsantriebsstrang und elektrisch betriebenes Kraftfahrzeug

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DE2414758B2 (de) * 1974-03-27 1976-04-15 Varta Batterie Ag, 3000 Hannover Elektrolyt-kuehlvorrichtung fuer aus mehreren zellen bestehende akkumulatorenbatterien
DE19542125A1 (de) * 1994-11-29 1996-05-30 Bayerische Motoren Werke Ag Heiz- und Kühlmittelkreislauf für ein Elektrofahrzeug
SE518142C2 (sv) * 2000-02-15 2002-09-03 Ericsson Telefon Ab L M Förfarande och anordning för reglering av batteritemperatur
DE102007050812A1 (de) * 2007-10-24 2009-04-30 Robert Bosch Gmbh Elektrochemischer Energiespeicher
DE102008004485A1 (de) * 2008-01-14 2009-07-16 Bayerisches Zentrum für Angewandte Energieforschung e.V. Verkapselung von organischen und anorganischen Latentwärmespeichermaterialien
DE102008024912A1 (de) * 2008-05-23 2009-11-26 Man Nutzfahrzeuge Aktiengesellschaft Elektrisches Speichersystem mit Doppelschichtkondensatoren

Also Published As

Publication number Publication date
WO2011088968A3 (fr) 2011-10-13
WO2011088968A2 (fr) 2011-07-28
DE202010001201U1 (de) 2011-06-01

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