• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device (1) for supplying air to a fuel cell (10), in particular a hydrogen-powered fuel cell (10), via a compressor (21) of an exhaust-gas turbocharger (20), the compressor (21) being connected to one of an exhaust-gas flow (10). A) the fuel cell drivable turbine (22) of the turbocharger (20) is drivingly connected via a shaft (23) and the turbocharger (20) is further drivingly connected to a motor (40) via a shaft (41), wherein the compressor ( 21) is connected to the fuel cell (10) via an air supply passage (24) for supplying compressed air (L). The invention also relates to the use of such a device.
    公开号:CH715032A2
    申请号:CH4942019
    申请日:2019-04-11
    公开日:2019-11-29
    发明作者:Haag Jan-Christoph；Aurahs Lutz；Heinz Christoph；Bartholomä Klaus
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    Description: The invention relates to a device for supplying air to a fuel cell, in particular a fuel cell operated with hydrogen.
    [0002] Conventionally, fuel cells are operated with pure hydrogen, which reacts to water in the fuel cell and thereby releases electricity. For this purpose, the hydrogen is usually expanded from a pressure vessel and fed to the fuel cell. The air required for combustion in the fuel cell is drawn in from the surroundings by an electrically operated blower and fed to the fuel cell.
    A generic prior art is described for example in DE 10 120 947 A1 or in DE 10 2004 051 359 A1.
    In both documents it is the case that two compressor stages are provided and a conventional system bypass branches off after the second compressor stage and leads to the input of a turbine.
    This embodiment allows a certain control of the air supply, but does not allow the necessary degrees of freedom to prevent, for example, in various operating situations that the desired volume flows and pressures in the fuel cell area can be set in an energy-efficient manner with two compressor stages designed as flow compressors.
    In the automotive environment, fuel cells are also known which are charged by means of a turbocharger. The intake air is drawn in by the compressor of a turbocharger and the exhaust gas generated during combustion drives the turbine of the turbocharger. If necessary, additional electrical energy can be fed into the shaft of the turbocharger by an electric motor in order to compensate for a thermodynamic imbalance of the two components.
    The disadvantage of the known solutions is that they cannot be used in an energy-efficient industrial scale for energy generation. There is then a need to increase the energy efficiency and thus the efficiency of the overall system.
    The object of the present invention is therefore to avoid the disadvantages mentioned and to provide a structure which offers a high degree of freedom with high energy efficiency with regard to the volume flows and pressures supplied to the fuel cell.
    According to the invention this structure is solved by the device with the features in claim 1.
    A basic idea of the invention is to use a turbocharger, in particular an exhaust gas turbocharger for the air supply to a fuel cell and to operate the turbocharger in a power balance, in that not only the energy usable by the exhaust gas stream is used to drive the compressor of the turbocharger, but the Turbocharger can also be driven by an engine.
    According to the invention, a device for supplying air to a hydrogen-operated fuel cell via a compressor of an exhaust gas turbocharger is proposed, the compressor being connected to a turbine of the turbocharger that can be driven by an exhaust gas flow A of the fuel cell, and the turbocharger is also drivingly effective with one Motor is connected via a shaft, the compressor being connected to the fuel cell via an air supply duct for supplying compressed air.
    [0012] In a preferred embodiment of the invention, the motor is an electric motor. It is further advantageous if the motor, the compressor and the turbine are connected to one another in a drive-effective manner on a common shaft, preferably the shaft of the turbocharger.
    In a further advantageous embodiment of the invention it is provided that the engine outside the turbocharger on the compressor side of the compressor is drive-connected to the shaft of the turbocharger.
    Alternatively, it can be provided that the engine outside the turbocharger on the turbine side with the turbine is connected to the shaft of the turbocharger in a drive-effective manner. If the engine is thus connected outside the turbocharger, a plain bearing that is customary in turbochargers can be used, which has clear advantages over an oil-free bearing in terms of speed and absorption of axial forces. If this advantage is implemented in the embodiment, there is the possibility of designing the compressor and the turbine in an optimal manner.
    Another aspect of the present invention relates to the use of a device for providing air for a fuel cell as described above, which is part of a fuel cell system, via which electrical drive power is provided to a consumer, preferably in the power range of> 100 kW.
    Other advantageous developments of the invention are characterized in the dependent claims or are shown below together with the description of the preferred embodiment of the invention with reference to the figures.
    [0017] It shows:
    CH 715 032 A2
    Fig. 1 is a schematic diagram of a first embodiment according to the invention and
    Fig. 2 is a schematic schematic diagram of an alternative embodiment according to the invention.
    The invention is described in more detail below with reference to preferred exemplary embodiments with reference to FIGS. 1 and 2, the same reference symbols in the figures indicating the same structural and / or functional features.
    In the illustrated embodiments, a fuel cell 10 and the device 1 for supplying air to the hydrogen-operated fuel cell 10 are shown. The device 1 has a compressor 21 of a turbocharger 20. The compressor 21 is connected in a drive-effective manner to a turbine 22 of the turbocharger 20 that can be driven by an exhaust gas stream A of the fuel cell 10. The exhaust gas flow generated by the fuel cell 10 flows through the turbine 22 and drives the compressor wheel of the compressor 21 via the shaft 23. The supply air for the fuel cell 10 is compressed by the compressor 21 and supplied to the fuel cell 10 via the air supply duct 24.
    In the embodiment of FIG. 1, an electric motor 40 is provided, which can drive the compressor 21 via a drive shaft 23. For this purpose, the compressor wheel of the compressor 21 is arranged together with the turbine 22 on the common shaft 23, 25. The engine 40 is arranged outside the turbocharger 20 on the compressor side of the compressor 21.
    In the embodiment according to FIG. 2 it is provided that the motor 40 is connected to the shaft 22 of the turbocharger in a drive-effective manner outside the turbocharger 20, specifically on the turbine side with the turbine 22.
    In both exemplary embodiments, the motor 40 is therefore not arranged between the turbine 22 and the compressor 21, but rather outside the turbocharger 20.
    The invention is not limited in its implementation to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable which make use of the solution shown, even in the case of fundamentally different types.
    权利要求:
    Claims (7)
    [1]
    claims
    1. A device (1) for supplying air to a fuel cell (10), in particular a hydrogen-operated fuel cell (10), via a compressor (21) of an exhaust gas turbocharger (20), the compressor (21) having an exhaust gas flow (A) the turbine (22) of the turbocharger (20), which can be driven by the fuel cell, is connected in a drive-effective manner via a shaft (23) and the turbocharger (20) is also connected in a drive-effective manner to a motor (40) via a shaft (25), the compressor (21) is connected to the fuel cell (10) via an air supply duct (24) for supplying compressed air (L).
    [2]
    2. Device (1) according to claim 1, characterized in that a motor (40) is an electric motor.
    [3]
    3. Device (1) according to claim 1 or 2, characterized in that the motor (40), the compressor (21) and the turbine (22) on a common shaft (23, 25) are drivingly connected to each other.
    [4]
    4. The device (1) according to claim 3, characterized in that the motor (40) outside the turbocharger (20) on the compressor side of the compressor (21) is drivingly connected to the shaft (23) of the turbocharger.
    [5]
    5. The device (1) according to claim 3, characterized in that the motor (40) outside the turbocharger (20) on the turbine side with the turbine (22) is connected to the shaft (23) of the turbocharger in a drive-effective manner.
    [6]
    6. Device (1) according to one of claims 4 or 5, characterized in that the shaft (23) is mounted by means of plain bearings.
    [7]
    7. Use of a device (1) according to one of claims 1 to 6, for providing air for a fuel cell (10), which is part of a fuel cell system, via which electrical drive power is provided to a consumer, preferably in the power range of> 100 kW ,
    CH 715 032 A2

    类似技术:
    公开号 | 公开日 | 专利标题
    DE19713676B4|2007-04-19|Secondary air system
    EP3207231B1|2018-11-28|Supercharger device for an internal combustion engine and operating method for supercharger device
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    DE102014221333A1|2016-04-21|Twin turbo system with electrically driven compressors
    DE10154637B4|2009-08-20|Fuel delivery unit and its use for providing a hydrogen-containing fuel
    DE102012221303A1|2014-05-22|Drive device for motor car, has bearing portions that are cooled convectively by coolant flow such that exhaust gas is removed from bearing portions by supplying coolant between fuel cell and turbine of supercharger
    DE102009042283A1|2011-03-31|Turbocompound system and components
    WO2005026512A1|2005-03-24|Device for compressing combustion air
    DE102012018712A1|2014-03-27|Air conveying device for supplying air to fuel cell system in vehicle, has compressor propelled with electric machine and intercooler, where electric machine is cooled by cooling medium in cooling circuit at intercooler
    EP2393708B1|2012-12-26|Internal combustion engine system having exhaust gas energy recapture for floating devices
    CH715032A2|2019-11-29|Device for supplying air to a fuel cell.
    DE102015202088A1|2016-08-11|Fuel cell system and method for operating such
    DE102016015266A1|2018-06-21|Air supply device and fuel cell system
    DE102018112451A1|2019-11-28|Device for supplying air to a fuel cell, preferably a hydrogen-powered fuel cell
    DE102007043585A1|2009-03-26|Turbocharger arrangement for internal-combustion engine, has turbochargers with turbine housings arranged in turbines, where pressure side of one turbocharger is connected gas-prominently with annular gap of other turbocharger
    DE102018207829A1|2019-12-05|Internal combustion engine
    DE102018112460A1|2019-11-28|Device with a turbocharger for charging a fuel cell
    WO2019110578A1|2019-06-13|Internal combustion engine, motor vehicle comprising same, and method for operating an internal combustion engine
    DE102014221334A1|2016-04-21|Twin turbo system with electrically driven compressors
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    DE102019108562A1|2020-10-08|Exhaust gas turbocharger of an internal combustion engine and method for operating an exhaust gas turbocharger
    同族专利:
    公开号 | 公开日
    JP2019204783A|2019-11-28|
    DE102018112454A1|2019-11-28|
    US20190363380A1|2019-11-28|
    KR20190134497A|2019-12-04|
    CN110534772A|2019-12-03|
    RU2019115386A|2020-11-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102008053151A1|2008-10-24|2010-04-29|Daimler Ag|A humidifying device and method for humidifying an oxidant stream and fuel cell system that can be supplied to a fuel cell stack|
    CN103597643B|2011-04-21|2016-06-08|空中客车德国运营有限责任公司|Drive unit, for providing the method for power and drive the utilization of unit|
    DE102011087601A1|2011-12-01|2013-06-06|Robert Bosch Gmbh|Turbo compressor, fuel cell system|
    DE102016015266A1|2016-12-21|2018-06-21|Daimler Ag|Air supply device and fuel cell system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102018112454.6A|DE102018112454A1|2018-05-24|2018-05-24|Device for supplying air to a fuel cell|
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