WO2017186376A1 - Dispositif de refroidissement pour pile à combustible et système de piles à combustible comportant le dispositif de refroidissement - Google Patents

Dispositif de refroidissement pour pile à combustible et système de piles à combustible comportant le dispositif de refroidissement Download PDF

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Publication number
WO2017186376A1
WO2017186376A1 PCT/EP2017/054202 EP2017054202W WO2017186376A1 WO 2017186376 A1 WO2017186376 A1 WO 2017186376A1 EP 2017054202 W EP2017054202 W EP 2017054202W WO 2017186376 A1 WO2017186376 A1 WO 2017186376A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling device
coolant
cooling
fuel cell
line
Prior art date
Application number
PCT/EP2017/054202
Other languages
German (de)
English (en)
Inventor
Helerson Kemmer
Arpad Imre
Christian Mielke
Johannes Schild
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2017186376A1 publication Critical patent/WO2017186376A1/fr

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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
    • H01M8/04082—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
    • H01M8/04104—Regulation of differential pressures
    • 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
    • H01M8/04044—Purification of heat exchange media
    • 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

Definitions

  • Cooling device for a fuel cell and fuel cell system with the
  • the present invention relates to a cooling device, in particular for a fuel cell, comprising a coolant line for conducting coolant through a cooling unit of the cooling device and a resource line for conducting a resource through an operating unit of the cooling device, wherein the cooling unit is configured for cooling the operating unit.
  • the present invention further relates to a fuel cell system with the
  • Accumulator technology is its long range and fast fueling in just minutes.
  • FCCUs Fluel Cell Control Units
  • An FCCU controls that Fuel cell system with integrated hydrogen, air and fuel
  • a fuel cell system with the FCCU has a
  • Cooling device by which a fuel cell stack can be cooled by a coolant. More specifically, in such a cooling device, the cathode of the fuel cell stack may be cooled by a cooling unit through which coolant is passed.
  • Relief opening against the gravitational direction or a mechanical ventilation can be realized.
  • the relief opening causes as a side effect that the coolant is in front of a coolant pump to ambient pressure level.
  • Coolant may only have a certain maximum deviation to the pressure level of the hydrogen and to the pressure level of the air, for example a maximum of ⁇ 1 bar.
  • the deviation is dictated by the design used inter alia by the seals used and ensures the tightness in areas at the anode, the cathode and a cooling device in the fuel cell stack.
  • Cooling device As a result, an improved cooling device and a fuel cell system with the cooling device are provided by means of which a fuel cell can be cooled at low cost. In addition, a method is provided by which a fuel cell with low
  • Cooling device in particular a cooling device for cooling a
  • the cooling device has a coolant line for conducting coolant through a cooling unit of the cooling device.
  • the cooling device has a first operating line for conducting a first operating means through a first operating unit of the cooling device.
  • the cooling unit is designed here for cooling the first operating unit.
  • the coolant line is downstream of the cooling unit in fluid communication with the first resource line. That is, a refrigerant degassing port of the refrigerant piping is not led directly to the environment, but into the pressurized first service piping.
  • Fluid connection with the first resource line is, the level of the refrigerant pressure at least in sections, in particular downstream of a coolant pump of the cooling device, always equal to a pressure in the first Resource line, ie, the first resource pressure.
  • Cooling device thus without use of a throttle or the like to a desired value, for example, 1.5 bar, are held. Moreover, in the present cooling device, the use of a large coolant pump or a plurality of coolant pumps can be dispensed with. As a result, both costs for the pump (s) and costs for the energy consumption of a large coolant pump or more
  • the present cooling device is in particular for the cooling of a
  • the present invention is not limited thereto.
  • the cooling device can also be designed for cooling of other applications with coolant-based cooling.
  • the coolant line is correspondingly preferred for conducting the coolant as a hose or pipe or hose or piping system
  • the coolant line is preferably part of a closed coolant circuit of the cooling device.
  • the cooling unit can also be called
  • Section of the coolant line to be configured which is preferably arranged in the vicinity or at the first operating unit.
  • the first operating unit is preferably designed as an operating unit for the operation of the fuel cell.
  • the first operating unit is designed, for example, as a cathode or has a cathode.
  • the first operating means is to be understood in particular as an operating fluid, which is preferably air or at least has.
  • the fluid connection between the coolant line downstream of the cooling unit and the first resource line is for example by a hose or Pipe made. That is, a hose or pipe section of the
  • Coolant line downstream of the cooling unit is connected directly to a hose or pipe section of the first service line.
  • the first operating unit has a cathode and the operating medium line is designed as a cathode gas line.
  • the cathode here is in particular a cathode of a fuel cell, wherein the
  • Fuel cell further comprises an anode, which may be referred to as a second operating unit.
  • anode In the cathode gas line usually ambient air is sucked in, which in the context of the present invention, this oxygen-containing gas mixture or the ambient air can be referred to as cathode gas.
  • cathode gas In known cooling devices for fuel cells, it is possible that hydrogen from the fuel cell in the cooling unit or the coolant line penetrates.
  • the coolant line it is possible for the coolant line to be located downstream of the cooling unit in FIG.
  • Fluid communication with the first resource line upstream of the first operating unit is. This makes it possible that particles of the coolant can be filtered by the operating unit.
  • a cooling device which is used for cooling a fuel cell, thereby hydrogen must not be conducted into the environment, but can be performed in the designed as a first operating unit cathode and passed through this in the environment. At the cathode, the hydrogen can be harmlessly oxidized or oxidized.
  • a membrane of the cooling device is arranged, which is, for example, hydrogen and air permeable, but impermeable for larger molecules such as glycol or molecules of a liquid.
  • the coolant line is located downstream of the cooling unit in FIG Fluid communication with the first resource line downstream of the first operating unit is. This can be reliably prevented
  • Coolant in the first operating unit or when cooling a fuel cell, penetrates into this. This could lead to damage of the fuel cell due to the possibly contained in the coolant moisture or chemical components of the coolant such as glycol. In this case, further, the cost of a membrane as described above could be saved. Moreover, it is possible according to the present invention, that in a
  • Cooling device a coolant expansion tank is connected to the coolant line and the coolant expansion tank spatially in
  • Gravity direction is lower than a junction of the fluid connection between the coolant line and the first resource line downstream of the first operating unit is arranged. Since, in the case of a cooling device, which is in use for cooling a fuel, the cathode gas is usually discharged counter to the direction of gravity upwards, this is structurally simple and inexpensive to implement. In such a
  • a coolant expansion tank is connected to the coolant line and the coolant expansion tank spatially in
  • Gravity direction is higher than the first operating unit is arranged.
  • a cooling device which is used for cooling a fuel cell
  • an overflow of hydrogen into the first operating unit or a cathode can be ensured.
  • a cooling device which is used for cooling a fuel cell
  • the coolant expansion tank is arranged spatially higher in the direction of gravity than the cooling unit. As a result, devices or mechanisms can be avoided, which would prevent leakage of the coolant expansion tank.
  • a sensor located in or on the first operating line to detect a substance that differs from the operating medium.
  • the sensor is preferred as
  • Hydrogen sensor designed. This makes it possible to identify hydrogen, which may not be filtered by the first operating unit, and to initiate necessary countermeasures.
  • the sensor is preferably positioned downstream of the first operating unit.
  • Cooling device the cooling unit to the first operating unit, in particular directly to the first operating unit, is arranged. This allows the
  • the cooling device can thereby also be arranged particularly space-saving in a fuel cell system.
  • the cooling unit in the sense of the present invention can also be designed as a section of the coolant line which, in particular, rests directly against the first operating unit or
  • Fuel cell system provided with a cooling device as explained above, wherein the first operating unit is an operating unit of the
  • Fuel cell system is. More specifically, in this case, the first operating unit is a cathode, which in turn is a cathode of a fuel cell of the fuel cell system. This brings the invention
  • the method according to the invention also brings about the same advantages as have been described in detail with reference to the cooling device according to the invention.
  • FIG. 1 is a block diagram of a fuel cell system with a
  • Fig. 2 is a block diagram of a fuel cell system with a
  • Cooling device according to a first embodiment of the present invention
  • Fig. 3 is a further block diagram of a fuel cell system with the
  • Cooling device according to the first embodiment of the present invention
  • Fig. 4 is a block diagram of a fuel cell system with a
  • Cooling device according to a second embodiment of the present invention
  • Fig. 5 is a further block diagram of a fuel cell system with the
  • Cooling device according to the second embodiment of the present invention, and Fig. 6 is a functional diagram of an inventive
  • the cooling circuit also has a coolant pump 120 and a radiator 140.
  • FIG. 2 shows a fuel cell system 100a with a cooling device 1a according to a first embodiment.
  • the illustrated cooling device 1 a is designed for cooling a fuel cell 110.
  • the cooling device 1a has a coolant line 10 for conducting coolant through a cooling unit 40 of the cooling device 1a.
  • cooling device la to a designed as a cathode gas line first resource line 20 to
  • the cooling unit 40 is designed here for cooling the first operating unit 50 and thereby for cooling the fuel cell 110.
  • the coolant line 10 is downstream of the cooling unit 40 with the first
  • the fuel cell system 100a shown in FIG. 2 also has a second operating line 30 designed as an anode gas line for conducting a second operating means (anode gas) through a second operating unit 60 designed as an anode.
  • Operating unit 60 form according to the illustrated embodiment, the essential components of a fuel cell 110.
  • a level of the refrigerant pressure before a Coolant pump 120 substantially automatically always equal to a cathode pressure and this in a defined ratio to a
  • the senor 70 is configured as a hydrogen sensor for detecting hydrogen.
  • the sensor 70 is disposed downstream of the first operating unit 50 in both FIGS. 2 and 3, the sensor 70 may be disposed upstream of the first operating unit 50.
  • FIG. 3 shows a block diagram of a fuel cell system 1 a with a cooling device 1 a as shown in FIG. 2 from a different perspective.
  • the cooling device 1a shown in FIG. 3 has a coolant compensation tank 90. From the illustration of Fig. 3 it can be seen that the coolant expansion tank 90 is connected to the coolant line 10 and the
  • Cooling device la spatially higher in the direction of gravity than the first
  • Operating unit 50 is arranged.
  • FIG. 4 shows a fuel cell system 100b with a cooling device 1b according to a second embodiment.
  • the cooling device 1b according to the second embodiment differs in particular from the
  • Coolant line 10 downstream of the cooling unit 40 in fluid communication with the first resource line 20 downstream of the first operating unit 50 is.
  • FIG. 5 shows a block diagram of a fuel cell system 1b with a cooling device 1b as shown in FIG. 4 from a different perspective.
  • Fig. 5 illustrated coolant expansion tank 90 is connected to the coolant line 10.
  • the coolant surge tank 90 is spatially disposed in the gravity direction lower than a joint 80 of the fluid communication.
  • the coolant expansion tank 90 is in this case between the coolant line 10 and the first resource line 20, downstream of the first
  • Operating unit 50 extends, arranged.
  • the coolant expansion tank 90 is spatially higher in the direction of gravity than the first operating unit 50 and the cooling unit 40 is arranged.
  • a method for cooling a fuel cell 110 with a cooling device 1 a, 1 b as described above may be further understood, in which the first operating means of the first
  • Operating medium line 20 is guided in the direction of or to the coolant line 10. Since the coolant in a closed or gas-tight
  • Coolant circuit is performed or circulated, thereby the level of the refrigerant pressure can always be kept automatically or at the level of the cathode pressure.
  • a controller can be provided which controls the method and monitors it by means of sensors.
  • FIG. 6 shows a fuel cell system 100a with the cooling device 1a. Further, in Fig. 6, the coolant surge tank 90 is shown integrated in the fuel cell system 100a.
  • the illustrated fuel cell system 100a further includes a fuel cell 110, a coolant pump 120 for pumping the
  • Coolant and a motor 130 for operating the cooling device la on Coolant and a motor 130 for operating the cooling device la on.

Abstract

L'invention concerne un dispositif de refroidissement (1a ; 1b), destiné en particulier à refroidir une pile à combustible (110), comprenant un conduit d'agent de refroidissement (10) destiné à acheminer un agent de refroidissement à travers une unité de refroidissement (40) du dispositif de refroidissement (1a ; 1b) et un premier conduit d'agent de service (20) destiné à acheminer un premier agent de service à travers une première unité de service (50) du dispositif de refroidissement (1a ; 1b). L'unité de refroidissement (40) est conçue pour refroidir la première unité de service (50). Le conduit d'agent de refroidissement (10) est en communication fluidique avec le premier conduit d'agent de service (20) en aval de l'unité de refroidissement (40). La présente invention concerne en outre un système de piles à combustible (100a ; 100b) équipé d'un dispositif de refroidissement (1a ; 1b) de l'invention. La première unité de service (50) est une unité de service du système de piles à combustible (100a ; 100b). En outre, la présente invention concerne un procédé de refroidissement d'une pile à combustible (110) équipé d'un dispositif de refroidissement (1a ; 1b) de l'invention. Un premier agent de service du premier conduit d'agent de service (20) est acheminé au conduit d'agent de refroidissement (10).
PCT/EP2017/054202 2016-04-27 2017-02-23 Dispositif de refroidissement pour pile à combustible et système de piles à combustible comportant le dispositif de refroidissement WO2017186376A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016207164.5 2016-04-27
DE102016207164.5A DE102016207164A1 (de) 2016-04-27 2016-04-27 Kühlvorrichtung für eine Brennstoffzelle und Brennstoffzellensystem mit der Kühlvorrichtung

Publications (1)

Publication Number Publication Date
WO2017186376A1 true WO2017186376A1 (fr) 2017-11-02

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ID=58108658

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PCT/EP2017/054202 WO2017186376A1 (fr) 2016-04-27 2017-02-23 Dispositif de refroidissement pour pile à combustible et système de piles à combustible comportant le dispositif de refroidissement

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DE (1) DE102016207164A1 (fr)
WO (1) WO2017186376A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020061426A1 (en) * 2000-10-13 2002-05-23 Honda Giken Kogyo Kabushiki Kaisha Cooling system and cooling process of fuel cell
EP1482586A1 (fr) * 2003-04-15 2004-12-01 HONDA MOTOR CO., Ltd. Dispositif pour refroidir une pile à combustible
KR20150072192A (ko) * 2013-12-19 2015-06-29 현대자동차주식회사 냉각수 기포 제거 장치 및 방법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020061426A1 (en) * 2000-10-13 2002-05-23 Honda Giken Kogyo Kabushiki Kaisha Cooling system and cooling process of fuel cell
EP1482586A1 (fr) * 2003-04-15 2004-12-01 HONDA MOTOR CO., Ltd. Dispositif pour refroidir une pile à combustible
KR20150072192A (ko) * 2013-12-19 2015-06-29 현대자동차주식회사 냉각수 기포 제거 장치 및 방법

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Publication number Publication date
DE102016207164A1 (de) 2017-11-02

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