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61.发明授权公开(公告)号：US06447943B1
公开(公告)日：2002-09-10
申请号：US09484267
申请日：2000-01-18
申请人： Emanuel Peled , Tair Duvdevani , Avi Melman , Adi Aharon
发明人： Emanuel Peled , Tair Duvdevani , Avi Melman , Adi Aharon
IPC分类号： H01M810
CPC分类号： H01B1/122 , H01M4/921 , H01M4/925 , H01M8/0289 , H01M8/04089 , H01M8/04104 , H01M8/04186 , H01M8/04194 , H01M8/04291 , H01M8/04447 , H01M8/04731 , H01M8/04753 , H01M8/04783 , H01M8/04843 , H01M8/08 , H01M8/1009 , H01M8/1039 , H01M8/1051 , H01M8/1067 , H01M16/006 , H01M2300/0091
摘要： The present invention provides improved, low-cost fuel cells having reduced fuel crossover, reduced sensitivity to metal ion impurities and ability to operate under a broad range of temperatures. Additionally, new effective organic fuels are described for use in such fuel cells. The invention further provides improved methods for catalyst preparation and a new integrated flow field system for use in H2/O2 fuel cells. The fuel cell includes a proton conducting membrane having pore diameters which are essentially smaller than 30 nanometers.
摘要翻译： 本发明提供了改进的低成本燃料电池，其具有减少的燃料交叉，降低对金属离子杂质的敏感性和在宽的温度范围内操作的能力。 另外，描述了用于这种燃料电池的新的有效的有机燃料。 本发明进一步提供用于催化剂制备的改进方法和用于H 2 / O 2燃料电池的新的集成流场系统。 燃料电池包括具有基本上小于30纳米的孔径的质子传导膜。
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公开(公告)号：US10038208B2
公开(公告)日：2018-07-31
申请号：US14935590
申请日：2015-11-09
发明人： Kazuo Yamamoto , Hiroyuki Imanishi
IPC分类号： H01M8/06 , H01M8/04 , H01M8/0662 , H01M8/0438 , H01M8/04746
CPC分类号： H01M8/0662 , H01M8/04402 , H01M8/04746 , H01M8/04783
摘要： When a current value is not greater than a reference value, a control unit estimates a discharge amount of a fuel gas based on a lost amount of the fuel gas and a consumed amount by electrical generation of the fuel gas, the lost amount being calculated based on a decrease rate of pressure in a supply passage during an opening period of a discharge valve, the consumed amount by electrical generation being calculated based on the current value during the opening period, and when the current value is greater than the reference value, the control unit estimates the discharge amount based on the differential pressure during the opening period.
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公开(公告)号：US09935325B2
公开(公告)日：2018-04-03
申请号：US14960355
申请日：2015-12-05
发明人： Ik Jae Son
IPC分类号： H01M8/0438 , H01M8/04746
CPC分类号： H01M8/04783 , H01M8/0438 , H01M2250/20 , Y02T90/32
摘要： A control method of an operation pressure of a fuel cell system maintains a differential pressure between a hydrogen side and an air side of a fuel cell stack to minimize a crossover amount of hydrogen while allowing hydrogen purge and reduces an exhausted hydrogen amount when a purge valve is opened at the time of purging hydrogen using a differential pressure of an anode outlet and a cathode outlet to improve a hydrogen utilization rate and system efficiency. According to the control method, pressures of a cathode inlet and a cathode outlet of the fuel cell stack and a pressure of an anode outlet are controlled such that the pressure of the anode outlet of the fuel cell stack is lower than the pressure of the cathode inlet and higher than the pressure of the cathode outlet.
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公开(公告)号：US09853316B2
公开(公告)日：2017-12-26
申请号：US14385048
申请日：2013-03-13
发明人： Takeaki Obata , Yoshitomo Asai , Hayato Chikugo
IPC分类号： H01M8/04 , H01M8/04992 , H01M8/04089 , H01M8/0438 , H01M8/04746 , H01M8/1039 , H01M8/1018
CPC分类号： H01M8/04992 , H01M8/04089 , H01M8/04104 , H01M8/04388 , H01M8/04753 , H01M8/04783 , H01M8/1039 , H01M2008/1095 , H01M2250/20 , Y02T90/32
摘要： A fuel cell system includes a target pressure setting unit configured to periodically and repeatedly set a target upper limit pressure and a target lower limit pressure as a target pressure of anode gas. An upper limit pressure setting unit is configured to set the smaller one of an upper limit value based on durability performance and an upper limit value based on output performance as an upper limit pressure of the anode gas. The target pressure setting unit sets a value smaller than the upper limit value as the target upper limit pressure when the upper limit value based on the durability performance of the fuel cell is selected as the upper limit pressure of the anode gas, and sets a pressure higher than the upper limit value as the target upper limit pressure when the upper limit value based on the output performance is selected.
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公开(公告)号：US20170352899A1
公开(公告)日：2017-12-07
申请号：US15504740
申请日：2014-08-20
发明人： Yoshitomo ASAI , Hiroshi TAKEDA
IPC分类号： H01M8/04089 , H01M8/0438 , H01M8/04746
CPC分类号： H01M8/04104 , H01M8/04395 , H01M8/04432 , H01M8/04753 , H01M8/04783 , H01M2250/20 , Y02T90/32
摘要： A fuel cell system includes a supply unit configured to supply cathode gas to a fuel cell, a bypass valve configured to bypass the cathode gas to be supplied to the fuel cell by the supply unit, a detection unit configured to detect a state of the cathode gas to be supplied to the fuel cell without being bypassed by the bypass valve, a pressure adjusting unit configured to adjust a pressure of the cathode gas to be supplied to the fuel cell, a calculation unit configured to calculate a target flow rate and a target pressure of the cathode gas to be supplied to the fuel cell according to an operating state of the fuel cell, an operating state control unit configured to control an operation amount of at least one of the pressure adjusting unit and the supply unit on the basis of a flow rate and the pressure of the cathode gas detected by the detection unit and the target flow rate and the target pressure calculated by the calculation unit, a bypass valve control unit configured to open and close the bypass valve on the basis of the flow rate of the cathode gas detected by the detection unit and the target flow rate calculated by the calculation unit, and a pressure compensation unit configured to compensate for the pressure of the cathode gas to be supplied to the fuel cell by increasing the at least one operation amount controlled by the operating state control unit or by decreasing an opening speed of the bypass valve when the bypass valve is opened.
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公开(公告)号：US20170324101A1
公开(公告)日：2017-11-09
申请号：US15146698
申请日：2016-05-04
发明人： MANISH SINHA , JAMES A. LEISTRA , SERGIO E. GARCIA , MARK W. ROTH
IPC分类号： H01M8/04119 , H01M8/04828 , H01M8/04746 , H01M8/04089 , H01M8/04537 , H01M8/04492 , H01M8/0432 , H01M16/00 , H01M8/04791
CPC分类号： H01M8/04179 , H01M8/04104 , H01M8/0432 , H01M8/04328 , H01M8/045 , H01M8/04589 , H01M8/04753 , H01M8/04783 , H01M8/04798 , H01M8/04843 , H01M8/0494 , H01M16/006
摘要： A method for performing one or more proactive remedial actions to prevent anode flow-field flooding in an anode side of a fuel cell stack at low stack current density. The method includes identifying one or more trigger conditions that could cause the anode flow-field to flood with water, and performing the one or more proactive remedial actions in response to the identified trigger conditions that removes water from the anode side flow-field prior to the anode flooding occurring.
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公开(公告)号：US09806357B2
公开(公告)日：2017-10-31
申请号：US15035580
申请日：2014-09-25
发明人： Nobuhisa Ikeda , Hayato Chikugo
IPC分类号： H01M8/04 , H01M8/04089 , H01M8/0438 , H01M8/04537 , H01M8/04746 , H01M8/043 , H01M8/04223 , H01M8/04228 , H01M8/04225 , H01M8/1018
CPC分类号： H01M8/04104 , H01M8/04225 , H01M8/04228 , H01M8/04231 , H01M8/043 , H01M8/04395 , H01M8/04619 , H01M8/04753 , H01M8/04783 , H01M8/1018 , H01M2250/20 , Y02E60/521 , Y02T90/32
摘要： A fuel cell system includes: a cathode pressure control unit configured to control a pressure of a cathode gas to be supplied to the fuel cell stack on the basis of a load of the fuel cell stack; and an anode pressure control unit configured to control a pressure of an anode gas to be supplied to the fuel cell stack to become higher than the pressure of the cathode gas so that a differential pressure between the pressure of the anode gas and the pressure of the cathode gas becomes a predetermined differential pressure or lower. The anode pressure control unit controls, at a time of recovery from idle stop, the pressure of the anode gas to be supplied to the fuel cell stack to a recovery-time pressure, the recovery-time pressure being obtained by adding the predetermined differential pressure to a predetermined pressure corresponding to an atmosphere pressure.
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公开(公告)号：US09653743B2
公开(公告)日：2017-05-16
申请号：US14550926
申请日：2014-11-22
发明人： Sang Yeoul Ahn , Tae Won Lim , Byung Ki Ahn , Hyun Seung Lee , Yong Sun Park , Sung Keun Lee
IPC分类号： H01M8/04 , H01M8/04664 , H01M8/0438 , H01M8/04746 , H01M8/1018
CPC分类号： H01M8/04671 , H01M8/04432 , H01M8/04783 , H01M2008/1095
摘要： Disclosed herein is a method of detecting defects of a fuel cell membrane-electrode assembly which comprises a gas diffusion layer, a catalyst layer and an electrolyte membrane. The method includes steps of: supplying gas to a first side of the membrane-electrode assembly; deducing a pressure of the supplied gas and a permeation rate of the gas permeating to a second side of the membrane-electrode assembly and then deducing an interface pressure between the electrolyte membrane and the gas diffusion layer of the membrane-electrode assembly using the deduced pressure of the supplied gas and the permeation rate; calculating a gas permeability of the electrolyte membrane using the deduced values of the pressure of the supplied gas and the permeation rate and a predetermined outlet pressure at the second side of the membrane-electrode assembly; and determining a defect state of the electrolyte membrane using a variation in the calculated gas permeability according to a change in the pressure of the supplied gas.
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公开(公告)号：US09184455B2
公开(公告)日：2015-11-10
申请号：US14240303
申请日：2012-08-24
申请人： Kunihiro Ukai , Tomoya Takeuchi
发明人： Kunihiro Ukai , Tomoya Takeuchi
CPC分类号： H01M8/04776 , H01M8/04373 , H01M8/04425 , H01M8/04783 , H01M8/0618 , H01M8/0662 , Y02E60/50
摘要： A fuel cell system includes: a reformer configured to generate a hydrogen-containing gas through a reforming reaction by using a raw material and steam; a raw material supply device configured to supply the raw material to the reformer; a steam supply device configured to supply the steam to the reformer; a temperature detector configured to detect a temperature of the reformer; a fuel cell configured to generate electric power by using the hydrogen-containing gas; a combustor configured to combust the hydrogen-containing gas discharged from the fuel cell to heat the reformer; and a controller configured to, while controlling the raw material supply device such that the temperature detected by the temperature detector becomes a target temperature, control the steam supply device such that a change rate of a steam supply amount to the reformer becomes less than a change rate of a raw material supply amount to the reformer.
摘要翻译： 燃料电池系统包括：重构器，其经配置以通过使用原料和蒸汽通过重整反应产生含氢气体; 原料供给装置，其将原料供给到重整器; 蒸汽供应装置，其构造成将蒸汽供应到重整器; 温度检测器，被配置为检测重整器的温度; 燃料电池，被配置为通过使用含氢气体产生电力; 燃烧器，其构造为燃烧从燃料电池排出的含氢气体以加热重整器; 以及控制器，被配置为在控制原料供应装置使得由温度检测器检测到的温度变为目标温度的同时，控制蒸汽供应装置，使得对重整器的蒸汽供应量的变化率变得小于变化 改性剂原料供应量的比例。
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公开(公告)号：US08999597B2
公开(公告)日：2015-04-07
申请号：US13697486
申请日：2011-04-19
申请人： Keigo Ikezoe , Mitsutaka Abe , Takanori Oku , Yasuhiro Numao
发明人： Keigo Ikezoe , Mitsutaka Abe , Takanori Oku , Yasuhiro Numao
CPC分类号： H01M8/2483 , H01M8/0254 , H01M8/0273 , H01M8/0276 , H01M8/04753 , H01M8/04783 , H01M8/1004 , H01M8/1007 , H01M8/242 , H01M2008/1095 , Y02E60/50
摘要： Disclosed is a fuel cell provided with a membrane electrode structure having a frame, two separators that sandwich the membrane electrode structure therebetween, and gas seals between the end portion of the frame and the end portions of respective separators, and diffuser sections for distributing a reacting gas to between the frame and respective separators. In the diffuser section on the cathode side, the frame is provided with a protruding section in contact with the separator, and in the diffuser section on the anode side, the frame and the separator are disposed by being spaced apart from each other, thereby excellently maintaining contact surface pressure between the membrane electrode structure and the separators, and preventing contact resistance from being increased.
摘要翻译： 本发明公开了一种燃料电池，具备具有框架的膜电极结构，夹着膜电极结构的两个隔板和框架的端部与各隔板的端部之间的气体密封，以及扩散部， 气体到框架和各分离器之间。 在阴极侧的扩散器部分中，框架设置有与隔板接触的突出部分，并且在阳极侧的扩散器部分中，框架和隔板通过彼此间隔开设置，因此优异地 保持膜电极结构和分离器之间的接触表面压力，并防止接触电阻增加。
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