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公开(公告)号：US20180309145A1
公开(公告)日：2018-10-25
申请号：US15944426
申请日：2018-04-03
Inventor： JIN ZHANG , SHIGENORI ONUMA , TAKASHI KAKUWA , MASASHI MORITA
IPC: H01M8/04225 , H01M8/04828 , H01M8/2425 , H01M8/04701 , H01M8/04291 , H01M8/12
Abstract: A high-temperature operation fuel cell system includes a cell stack; a reformer; a raw material supplier supplying a raw material to the reformer; a water supplier supplying reforming water; an air supplier supplying electric power generation air; a combustion chamber in which an off-gas from the cell stack is combusted and which heats the cell stack and the reformer; an igniter igniting the off-gas in the combustion chamber; and a controller. In a start-up sequence, the controller controls so that the raw material is supplied to the reformer, the electric power generation air is supplied to the cell stack, the off-gas is ignited by the igniter, and after the ignition, the supply of the reforming water is started, and after the supply of the reforming water is started, the controller further controls the air supplier to increase the flow rate of the electric power generation air in a stepwise manner.
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公开(公告)号：US20180138540A1
公开(公告)日：2018-05-17
申请号：US15800069
申请日：2017-11-01
Inventor： TAKASHI KAKUWA
IPC: H01M8/2475 , H01M8/0276 , H01M8/0247 , H01M8/2425 , H01M8/248 , H01M8/0273
Abstract: A fuel cell device includes: a fuel cell stack having a plurality of stacked unit cells; a first current collector and a second current collector which are arranged so as to have the fuel cell stack sandwiched therebetween in a stacking direction of the unit cells; a housing which stores the fuel cell stack, the first current collector, and the second current collector; a conductive first fastening member which is electrically connected to the second current collector, extends from the second current collector toward a side where the first current collector is disposed along the stacking direction, and has a first protrusion protruding from inside the housing to outside the housing; and a first elastic member which is provided at the first protrusion of the first fastening member so as to elastically bias the second current collector toward the first current collector via the first fastening member.
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公开(公告)号：US20170338505A1
公开(公告)日：2017-11-23
申请号：US15590859
申请日：2017-05-09
Inventor： OSAMU SAKAI , KUNIHIRO UKAI , YASUSHI KANEKO , SHIGENORI ONUMA , TAKASHI KAKUWA
IPC: H01M8/1231 , H01M8/04007 , H01M8/04014 , H01M8/04082 , H01M8/0612 , H01M8/1233 , H01M8/124
CPC classification number: H01M8/0618 , C01B3/06 , H01M8/04022 , H01M8/04074 , H01M8/0662 , H01M2008/1293
Abstract: A high-temperature fuel cell system includes a fuel cell that includes an anode and a cathode and that generates power by using a fuel gas and an oxidant gas, a fuel-gas path along which the fuel gas flows, an oxidant-gas path along which the oxidant gas flows, an anode-off-gas path along which an anode off-gas flows, a cathode-off-gas path along which a cathode off-gas flows, a combustion space in communication with the anode-off-gas path and the cathode-off-gas path and in which the anode off-gas and the cathode off-gas are burned, a flue-gas path along which a flue gas flows, a cathode-off-gas branch portion disposed on the cathode-off-gas path between the combustion space and the cathode and at which some of the cathode off-gas is branched from the cathode-off-gas path, and a first heat exchanger that enables heat exchange between the oxidant gas, the flue gas, and the cathode off-gas.
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公开(公告)号：US20230227987A1
公开(公告)日：2023-07-20
申请号：US18183092
申请日：2023-03-13
Inventor： TAKASHI KAKUWA , HIROMI KITA , OSAMU SAKAI
Abstract: A compression apparatus includes at least one compression unit, a voltage applier, an anode end plate provided on an anode separator located at a first end in a direction of stacking, a cathode end plate provided on a cathode separator located at a second end in the direction of stacking, and first and second plates provided between the cathode end plate and the cathode separator located at the second end. The compression apparatus causes, by using the voltage applier to apply a voltage, protons taken out from an anode fluid that is supplied to the anode to move to the cathode via the electrolyte membrane and produces compressed hydrogen. The first plate has formed therein a first space in which to store a cathode gas containing the compressed hydrogen. The second plate is provided with a first manifold through which the cathode gas flows and a first communicating path through which to lead, to the first space, the cathode gas having flowed in from the first manifold.
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公开(公告)号：US20230213027A1
公开(公告)日：2023-07-06
申请号：US18183071
申请日：2023-03-13
Inventor： OSAMU SAKAI , HIROMI KITA , TAKASHI KAKUWA , TAKAYUKI NAKAUE
Abstract: A compression apparatus includes an electrolyte membrane, an anode provided on a first principal surface of the electrolyte membrane, a cathode provided on a second principal surface of the electrolyte membrane, an anode separator provided on the anode, a cathode separator provided on the cathode, and a voltage applier that applies a voltage between the anode and the cathode. The compression apparatus causes, by using the voltage applier to apply a voltage, protons taken out from a hydrogen-containing gas that is supplied to the anode to move to the cathode via the electrolyte membrane and produces compressed hydrogen. The anode separator has a first flow channel, provided in a principal surface thereof facing away from the anode, through which a cooling fluid flows.
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Patent Agency Ranking
公开(公告)号：US20220029195A1
公开(公告)日：2022-01-27
申请号：US17493912
申请日：2021-10-05
Inventor： KOSUKE NUNOO , TAKEHITO GOTO , YUICHI MIKAMI , TAKESHI TERAYAMA , SHIGENORI ONUMA , TAKASHI KAKUWA , KYOHEI KAWADA , TOMOHIRO KUROHA
IPC: H01M10/0562
Abstract: An electrochemical cell includes a first electrolyte layer containing an oxide-ion conductor, a second electrolyte layer containing a proton conductor, a first electrode which is disposed between the first electrolyte layer and the second electrolyte layer and in contact with a first principal surface of the first electrolyte layer and a first principal surface of the second electrolyte layer and into which a gas flows, a second electrode which is provided on a second principal surface of the first electrolyte layer and which generates oxygen, and a third electrode which is provided on a second principal surface of the second electrolyte layer and which generates hydrogen.
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公开(公告)号：US20210408570A1
公开(公告)日：2021-12-30
申请号：US17471726
申请日：2021-09-10
Inventor： OSAMU SAKAI , YUKIMUNE KANI , TAKASHI KAKUWA , HIROMI KITA , TOMOYA KAMATA , TAKAYUKI NAKAUE
IPC: H01M8/248 , H01M8/0438 , H01M8/0656 , H01M8/1004
Abstract: A compression apparatus includes a stack of electrochemical cells each including an anode, a cathode, and an electrolyte membrane interposed therebetween, a pair of insulating plates disposed at respective ends of the stack in a stacking direction, a pair of end plates disposed on outside surfaces of the respective insulating plates, and a voltage applicator that applies a voltage between the anode and the cathode. The end plate having the cathode gas channel includes a first region that includes an outer peripheral surface of the cathode gas channel and is composed of a first steel material and a second region other than the first region which is composed of a second steel material. The first steel material has higher hydrogen embrittlement resistance than the second steel material, and the second steel material has higher stiffness than the first steel material.
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公开(公告)号：US20210399324A1
公开(公告)日：2021-12-23
申请号：US17463629
申请日：2021-09-01
Inventor： TOMOYA KAMATA , TAKASHI KAKUWA , HIROMI KITA , TOMOHIRO KUROHA
IPC: H01M8/1213 , H01M4/86 , H01M8/1253
Abstract: A membrane electrode assembly according to the present disclosure includes an electrode, an electrolyte layer bonded to the electrode and containing an electrolyte having proton conductivity, a metal frame, and a bonding layer disposed between a peripheral part of the electrolyte layer and the metal frame and held in contact with each of the electrolyte layer and the metal frame, wherein the bonding layer has a thickness of greater than or equal to 0.50 mm.
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公开(公告)号：US20210273237A1
公开(公告)日：2021-09-02
申请号：US17323905
申请日：2021-05-18
Inventor： SHIGENORI ONUMA , TAKASHI KAKUWA
IPC: H01M4/90
Abstract: An electrochemical device includes an electrolyte membrane, an anode disposed on a first main surface of the electrolyte membrane, a cathode disposed on a second main surface of the electrolyte membrane, an anode separator disposed on the anode, and a cathode separator disposed on the cathode. At least one of the anode separator or the cathode separator includes a metal substrate sheet and a conductive layer disposed on the metal substrate sheet and containing a metal oxide and a metal hydroxide.
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公开(公告)号：US20200044263A1
公开(公告)日：2020-02-06
申请号：US16516874
申请日：2019-07-19
Inventor： TAKASHI KAKUWA , HIROMI KITA , TOMOYA KAMATA , MASATOSHI NAKAMURA , TOMOHIRO KUROHA
IPC: H01M8/0271 , H01M8/2425 , H01M8/1213 , C25B9/08
Abstract: A solid oxide fuel cell including unit cells, including: a pair of interconnectors for electrically connecting the unit cells; a membrane-electrode assembly including an electrolyte membrane and a pair of electrode layers disposed with the electrolyte membrane therebetween; a pair of current collectors disposed between the electrode layers and the interconnectors so as to be in contact with the pair of electrode layers and the pair of interconnectors, respectively, and electrically connecting the pair of electrode layers and the pair of interconnectors; and elastic bodies biasing at least one current collector of the pair of current collectors toward a corresponding electrode layer and made of austenitic stainless steel.
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