WO2014012615A1 - Système de pile à combustible - Google Patents

Système de pile à combustible Download PDF

Info

Publication number
WO2014012615A1
WO2014012615A1 PCT/EP2013/001778 EP2013001778W WO2014012615A1 WO 2014012615 A1 WO2014012615 A1 WO 2014012615A1 EP 2013001778 W EP2013001778 W EP 2013001778W WO 2014012615 A1 WO2014012615 A1 WO 2014012615A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel cell
air
heat exchanger
cell system
cooling
Prior art date
Application number
PCT/EP2013/001778
Other languages
German (de)
English (en)
Inventor
Gert Hinsenkamp
Gerhard Konrad
Benjamin Steinhauser
Original Assignee
Daimler Ag
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 Daimler Ag filed Critical Daimler Ag
Publication of WO2014012615A1 publication Critical patent/WO2014012615A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04029—Heat exchange using liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
    • H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04111—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04126—Humidifying
    • H01M8/04141—Humidifying by water containing exhaust gases
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the fuel cell system The fuel cell system
  • the invention relates to a fuel cell system with an air conveyor for compressing supply air for a fuel cell according to the closer defined in the preamble of claim 1.
  • Fuel cell systems are known from the general state of the art. They typically include a fuel cell, which is designed as a stack of individual cells, as a so-called fuel cell stack or fuel cell stack.
  • This fuel cell is usually supplied with hydrogen or a hydrogen-containing gas on the anode side as fuel and air as an oxygen supplier on the cathode side.
  • the air supplied to the fuel cell is typically compressed, for example via a flow compressor, a piston compressor, a Roots blower or the like.
  • the compressed supply air is then heated after the compressor in most operating situations by the compression and has a relatively high temperature. At least when using PEM fuel cells, this represents a serious disadvantage, since the membranes present in the fuel cell are dried out and damaged by the hot supply air.
  • disadvantageous is the comparatively high temperature of the compressed air affecting further components of the fuel cell system which are arranged in the air-conveying line between the compressor outlet and the stack inlet, such as e.g.
  • Humidifier, valves or flaps Here are the possible disadvantages, especially in the form of formerlystensive expenses in construction and materials for
  • a charge air cooler in order to cool the supply air to the fuel cell accordingly.
  • a charge air cooler uses the cooling medium of a cooling circuit for cooling the supply air, in particular the cooling circuit, in which the fuel cell is arranged to dissipate waste heat.
  • the problem with the construction described therein is that the cooling system is loaded accordingly and, in particular when used in a vehicle, correspondingly large areas of cooling heat exchangers are necessary for removing the heat from the cooling system to the environment.
  • Reverse direction come in the gas / gas heat exchanger.
  • the membranes of the fuel cell are heated unnecessarily and thereby burdened.
  • the object of the present invention is now a
  • the structure should also be simple and compact feasible.
  • the fuel cell system according to the invention uses comparable to the aforementioned prior art, an air / liquid heat exchanger as Ladeiuftkühler, which of the compressed supply air and of a liquid cooling medium of a
  • Cooling circuit is flowed through.
  • the invention uses
  • Fuel cell system an air / liquid heat exchanger in the exhaust air from the fuel cell, which is traversed by the exhaust air and the cooling medium.
  • the structure can be made very compact and guarantees an efficient, safe and reliable cooling of the compressed supply air after the air conveyor.
  • the cooling medium then flows through a heat exchanger, which is flowed through by the cooling medium on the one hand and by the exhaust air on the other hand.
  • the exhaust air can absorb heat from the cooling medium and, for example, with the exhaust air directly to the environment, whereby the cooling medium is cooled again.
  • this structure can be realized according to simple and compact.
  • a turbine is arranged downstream of the air / liquid heat exchanger in the flow direction of the exhaust air.
  • a turbine which in particular may be part of an electric turbocharger, so as to the turbine
  • To provide accumulating power directly the air conveyor available, allows recovery of pressure and heat energy from the exhaust air of the fuel cell. Is in the flow direction of the exhaust air in front of the turbine on the
  • Cooling medium and the air / liquid heat exchanger of the structure according to the invention added additional heat into the exhaust air, the yield of mechanical power can be increased accordingly, resulting in an improvement of
  • the cooling circuit is designed as a standalone cooling circuit between the charge air cooler and the heat exchanger, which has a coolant conveyor.
  • a structure uses its own cooling circuit, which is formed only between the two mentioned heat exchangers, ie the charge air cooler and the heat exchanger, which emits the heat absorbed into the exhaust air of the fuel cell system.
  • a burden on the cooling system for cooling the fuel cell is thereby completely avoided and the fuel cell system in this embodiment can continue to build very compact.
  • the cooling medium is circulated in the cooling circuit between the intercooler and the heat exchanger according to, for example, by a speed of the
  • Coolant conveyor adjustable volume flow of the cooling medium cooling can be controlled specifically. Thus, it is also possible in the operating situations in which no heat transfer is desired, this by turning off the
  • the cooling circuit is part of a cooling system
  • the cooling medium flows through the fuel cell in addition to the charge air cooler, and which has a coolant conveyor and a cooling heat exchanger for cooling the cooling medium.
  • Cooling circuit by a heat transfer to the exhaust air and yet ensures a simple and efficient structure, since a single coolant delivery device is sufficient in this case.
  • Valve device is controllable. In this way it is further ensured that in the operating situations in which a cooling is not desirable or there is a risk of reversal of the effective direction, to a flow through the corresponding
  • the valve device can be designed as a thermostatic valve, so that automatically takes place as a function of the temperature of the cooling medium, a flow through the charge air cooler and the cooling heat exchanger or not.
  • the fuel cell system according to the invention can be constructed correspondingly compact and enables safe and reliable operation in all
  • Fuel cell system in a vehicle Here are on the one hand difficult
  • Temperature difference between the fuel cell and the environment typically is much lower than between an internal combustion engine and the environment and the available area of the cooling heat exchanger thus has a limiting effect on the performance of the fuel cell system.
  • FIG. 1 shows a vehicle with a fuel cell system according to the invention.
  • Fig. 2 shows an alternative embodiment of a fuel cell system according to the
  • FIG. 3 shows a further alternative embodiment of the fuel cell system according to the invention.
  • a fuel cell system 1 can be seen, which is arranged in an indicated vehicle 2, and which is to serve in this vehicle 2 for providing electrical drive power.
  • vehicle 2 may preferably be a motor vehicle, for example a rail-bound or trackless land vehicle, a logistics transporter, a watercraft or the like.
  • Core of the fuel cell system 1 is a fuel cell 3 and a
  • Fuel cell stack 3 which is constructed as a stack of single cells in PEM technology.
  • the individual cells are not visible in the representation of the figure.
  • Each of the individual cells has a cathode space and an anode space, wherein a common anode space 4 and a common cathode space 5 are shown symbolically in the representation of FIG.
  • a heat exchanger 6 for removing waste heat from the fuel cell 3 via a liquid cooling medium is indicated.
  • This liquid cooling medium flows from a coolant conveyor 7 promoted in the circuit between the fuel cell 3 and the heat exchanger 6 of the fuel cell 3 and a
  • Cooling heat exchanger 8 for dissipating the waste heat to the environment of the vehicle 2.
  • the cooling power for example, by influencing the speed of the Coolant conveyor 7 can be adjusted or can be adjusted via a bypass, not shown here parallel to the cooling heat exchanger 8 with a suitable valve.
  • Hydrogen is supplied from a compressed gas reservoir 9 via a pressure regulating and metering valve 10 to the anode compartment 4 of the fuel cell 3. Unconsumed hydrogen passes from the fuel cell via an exhaust pipe 11, for example, to the
  • the cathode chamber 5 of the fuel cell 3 air via an air conveyor 12, a charge air cooler 13 and a humidifier 14 is supplied. Exhaust air from the
  • Cathode space 5 in turn passes through the humidifier 14 and an air / liquid heat exchanger 15 and a turbine 16 to the environment.
  • the turbine 16 serves to use pressure energy and thermal energy in the exhaust air and converts them at least partially into mechanical energy.
  • the turbine 16 is seated together with the air conveyor 12 on a common shaft 17, so that the energy recovered in the region of the turbine 16 can be used directly to drive the air conveyor 12. In the normal case, the power occurring in the region of the turbine 16 will not be sufficient for driving the air conveying device 12. Therefore, an electric machine 18 is provided, which provides the required power difference for driving the air conveyor 12. Should it be in individual
  • Proton exchange membranes are very unfavorable, as they dry out easily and can be damaged thereby. To counteract the problem,
  • the supply air heated by the compression in the air delivery device 12 therefore first flows through the charge air cooler 13, in the region of which the supply air is cooled, for which purpose a liquid cooling medium is used, which is circulated in a cooling circuit 19 by a coolant delivery device 20.
  • the thus cooled but still dry supply air then enters the humidifier 14, which may be designed in particular as a gas / gas humidifier.
  • a typical structure would be, for example, that arranged therein for water vapor-permeable membranes, which are overflowed on one side of the dry supply air to the cathode chamber 5.
  • the membranes are overflowed by the exhaust air laden with the largest part of the product water produced in the fuel cell 3, so that water vapor passes through the membranes from the moist exhaust air into the dry supply air and moisturizes it.
  • the then relatively dry exhaust air then flows through the heat exchanger 15 to the turbine 16.
  • Heat exchanger 15 is now formed so that it is also part of the cooling circuit 19 and thus suitable for heating the exhaust air by the recirculated in the cooling circuit 19 cooling medium.
  • This cooling medium has absorbed heat from the heated supply air in the region of the intercooler 13 and thus now heats the exhaust air of the fuel cell 3.
  • volumetric flow of the coolant conveyor 20 the heat transfer can be adjusted accordingly.
  • the coolant flow can be turned off or reduced accordingly, resulting in a very good controllability and a very good
  • the waste heat introduced into the exhaust air can then at least partially be converted into mechanical power in the turbine 16 and be used to improve the exhaust gas
  • Fuel cell system 1 The coming of the cooling heat exchanger 8 cooling medium flows in the illustrated embodiment in parallel through the heat exchanger 6 of the fuel cell 3 on the one hand and by the intercooler 13 and then by the heat exchanger 15 on the other.
  • a valve device 21 is provided to influence the cooling of the compressed supply air while a valve device 21 is provided.
  • the flow of this branch can be prevented with cooling medium.
  • this valve device 21 is designed as a thermostatic valve. It then opens automatically from a certain preset temperature of the cooling medium in the cooling system and allows so without active activation of the described functionality.
  • Fuel cell system 1 shown. In this embodiment of the
  • Fuel cell system 1 is completely dispensed with the turbine 16 and it is arranged in the flow direction after the heat exchanger 15, only a pressure-maintaining valve 22. Although energy recovery via the turbine can not be achieved in this way, by dissipating the heat via the exhaust air to the environment, a relief of the overall cooling system is achieved in any case. Furthermore, reduced by the inventive increase in the exhaust air temperature in this
  • Flow cross-section for example, must be divided by a plurality of hollow fiber membranes, channels or the like.
  • the Intercooler 13 and the heat exchanger 15 in the humidifier 14 can thus reduce the pressure loss for the supply air and the exhaust air and it can be a total of a very compact design achieve, which is particularly crucial when used in the vehicle 2, as typically here anyway only little space is available.
  • Charge air cooler 13 and / or the heat exchanger 15 in the humidifier 14 make.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

La présente invention concerne un système de pile à combustible (1) comprenant un dispositif de transport d'air (12) conçu pour comprimer de l'air frais pour une pile à combustible (3), ainsi qu'un système de refroidissement d'air de suralimentation (13) conçu sous forme d'échangeur thermique air/liquide, qui est traversé d'un côté par l'air frais comprimé et d'un autre côté par un milieu de refroidissement liquide d'un circuit de refroidissement. L'invention est caractérisée en ce qu'un autre échangeur thermique air/liquide (15) est prévu dans la zone de l'air d'évacuation de la pile à combustible (3), lequel échangeur thermique est d'un côté traversé par l'air d'évacuation et d'un autre côté par le milieu de refroidissement.
PCT/EP2013/001778 2012-07-17 2013-06-15 Système de pile à combustible WO2014012615A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012014110.6 2012-07-17
DE102012014110.6A DE102012014110A1 (de) 2012-07-17 2012-07-17 Brennstoffzellensystem

Publications (1)

Publication Number Publication Date
WO2014012615A1 true WO2014012615A1 (fr) 2014-01-23

Family

ID=48656018

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/001778 WO2014012615A1 (fr) 2012-07-17 2013-06-15 Système de pile à combustible

Country Status (2)

Country Link
DE (1) DE102012014110A1 (fr)
WO (1) WO2014012615A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016083365A1 (fr) * 2014-11-28 2016-06-02 Bayerische Motoren Werke Aktiengesellschaft Procédé de fonctionnement prédictif d'un véhicule automobile équipé d'un système de piles à combustible

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018202906A1 (de) * 2018-02-27 2019-08-29 Robert Bosch Gmbh Brennstoffzellensystem
DE102019212398A1 (de) * 2019-08-20 2021-02-25 Audi Ag Ladeluftkühler und Brennstoffzellensystem
DE102020207746A1 (de) * 2020-06-23 2021-12-23 Robert Bosch Gesellschaft mit beschränkter Haftung Wärmeübertrag im Kathodenpfad eines Brennstoffzellensystems mittels Verdampfung/Kondensation von Produktwasser
DE102022108522B3 (de) 2022-04-08 2023-05-04 Audi Aktiengesellschaft Brennstoffzellenvorrichtung und Verfahren zur Behandlung und Nutzung des kathodenseitigen Abgases

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT502353A1 (de) * 2006-06-29 2007-03-15 Avl List Gmbh Verfahren und vorrichtung zur konditionierung eines o2-hältigen gases
DE102006043573A1 (de) * 2006-09-16 2008-03-27 Daimler Ag Verfahren zur Verringerung des Austritts von flüssigem Wasser
DE102009014743A1 (de) 2009-03-25 2010-09-30 Daimler Ag Brennstoffzellensystem mit einer Niedertemperatur-Brennstoffzelle
DE102009043569A1 (de) 2009-09-30 2011-04-07 Daimler Ag Verfahren zum Betreiben eines Brennstoffzellensystems
DE102010033772A1 (de) * 2010-08-09 2012-02-09 Daimler Ag Brennstoffzellensystem mit wenigstens einer Brennstoffzelle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT502353A1 (de) * 2006-06-29 2007-03-15 Avl List Gmbh Verfahren und vorrichtung zur konditionierung eines o2-hältigen gases
DE102006043573A1 (de) * 2006-09-16 2008-03-27 Daimler Ag Verfahren zur Verringerung des Austritts von flüssigem Wasser
DE102009014743A1 (de) 2009-03-25 2010-09-30 Daimler Ag Brennstoffzellensystem mit einer Niedertemperatur-Brennstoffzelle
DE102009043569A1 (de) 2009-09-30 2011-04-07 Daimler Ag Verfahren zum Betreiben eines Brennstoffzellensystems
DE102010033772A1 (de) * 2010-08-09 2012-02-09 Daimler Ag Brennstoffzellensystem mit wenigstens einer Brennstoffzelle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016083365A1 (fr) * 2014-11-28 2016-06-02 Bayerische Motoren Werke Aktiengesellschaft Procédé de fonctionnement prédictif d'un véhicule automobile équipé d'un système de piles à combustible
CN106716697A (zh) * 2014-11-28 2017-05-24 宝马股份公司 用于预测性运行具有燃料电池系统的机动车的方法

Also Published As

Publication number Publication date
DE102012014110A1 (de) 2014-01-23

Similar Documents

Publication Publication Date Title
EP3269002B1 (fr) Dispositiv de refroidissement pour refroidir une pile à combustible
DE102011111742A1 (de) Brennstoffzellensystem
DE102004016375B4 (de) Brennstoffzellensystem mit Kühlkanälen sowie Verfahren zum Betrieb eines Brennstoffzellensystems mit Kühlkanälen
EP2399313B1 (fr) Système de pile à combustible comportant au moins une pile à combustible
DE102010011556A1 (de) Vorrichtung zur Brennstoffversorgung
WO2014012615A1 (fr) Système de pile à combustible
DE112009001821T5 (de) Vorrichtung zur Versorgung einer Brennstoffzelle in einem Brennstoffzellensystem mit Brenngas
WO2019166122A1 (fr) Système de pile à combustible
WO2014048525A1 (fr) Système de pile à combustible
WO2011050916A1 (fr) Système de piles à combustible comprenant au moins une pile à combustible
DE102014219944A1 (de) Aufgeladene Brennkraftmaschine
DE102012003922A1 (de) Brennstoffzellensystem mit einem Brennstoffzellenstapel
EP2574738A1 (fr) Installation de stockage d'énergie thermique
DE102015001352A1 (de) Brennstoffzellensystem
DE102010008205A1 (de) Brennstoffzellensystem mit wenigstens einer Brennstoffzelle
DE102020206162A1 (de) Luftversorgungsvorrichtung für Brennstoffzellensysteme und Brennstoffzellensystem
WO2009010113A1 (fr) Dispositif et procédé permettant la montée en température d'une pile à combustible au cours d'une phase de démarrage
WO2014173529A2 (fr) Dispositif de traitement d'air
DE102012018712A1 (de) Luftfördereinrichtung und Brennstoffzellensystem
DE102015005978A1 (de) Verfahren zum Betreiben eines Brennstoffzellensystems
EP2399314B1 (fr) Système de pile à combustible comportant au moins une pile à combustible
DE102010047523A1 (de) Brennstoffzellensystem mit wenigstens einer Brennstoffzelle
DE102012007382A1 (de) Brennstoffzellensystem
DE102012020648A1 (de) Drehschieberventil
DE102015004802A1 (de) Kühlvorrichtung

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: 13729921

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13729921

Country of ref document: EP

Kind code of ref document: A1