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公开(公告)号：US20240301570A1
公开(公告)日：2024-09-12
申请号：US18661344
申请日：2024-05-10
Inventor： TAKAYUKI NAKAUE , OSAMU SAKAI , YUKIMUNE KANI
Abstract: A compression device includes: an electrochemical cell that includes an anode and a cathode that sandwich an electrolyte membrane; a voltage application unit that applies a voltage between the anode and the cathode; and a metal plate that is exposed to compressed hydrogen generated at the cathode and that is resistant to hydrogen embrittlement. The metal plate includes a first terminal connected to the voltage application unit. The first terminal is directly connected to a second terminal that has a lower resistance than the first terminal. The second terminal is directly connected to the voltage application unit, and the first terminal is connected to the voltage application unit via the second terminal.
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公开(公告)号：US20240060190A1
公开(公告)日：2024-02-22
申请号：US18500159
申请日：2023-11-02
Inventor： TAKAYUKI NAKAUE , TAKASHI KAKUWA , OSAMU SAKAI , YUKIMUNE KANI
IPC: C25B1/02 , C25B9/19 , C25B11/032 , C25B11/052
CPC classification number: C25B1/02 , C25B9/19 , C25B11/032 , C25B11/052
Abstract: An electrochemical cell for a hydrogen pump includes an electrolyte membrane, an anode catalyst layer disposed on a first main surface of the electrolyte membrane, a cathode catalyst layer disposed on a second main surface of the electrolyte membrane, an anode gas diffusion layer disposed on the anode catalyst layer, and a cathode gas diffusion layer disposed on the cathode catalyst layer. When a voltage is applied between the anode catalyst layer and the cathode catalyst layer, the cathode gas diffusion layer is exposed to a hydrogen-containing gas at a pressure higher than that at the anode gas diffusion layer. A thickness of the anode gas diffusion layer is greater than or equal to a thickness of the cathode gas diffusion layer.
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公开(公告)号：US20210305607A1
公开(公告)日：2021-09-30
申请号：US17345210
申请日：2021-06-11
Inventor： TAKASHI KAKUWA , HIROMI KITA , OSAMU SAKAI
IPC: H01M8/0656
Abstract: The compression apparatus includes an electrolyte membrane, an anode on a principal surface of the electrolyte membrane, a cathode on another principal surface of the electrolyte membrane, an anode separator on the anode, a cathode separator on the cathode, and a voltage applicator. Upon the voltage applicator applying the voltage between the anode and the cathode, protons are extracted from an anode fluid fed onto the anode to migrate onto the cathode through the electrolyte membrane and compressed hydrogen is produced. The cathode separator has a first manifold hole and a first O-ring groove surrounding the first manifold hole. The compression apparatus includes a first O-ring held by the first O-ring groove and a face seal disposed on an outer periphery of a region of an anode-side principal surface of the anode separator which faces the anode. The first O-ring is arranged to abut against the anode-side principal surface.
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公开(公告)号：US20190363386A1
公开(公告)日：2019-11-28
申请号：US16377888
申请日：2019-04-08
Inventor： HIDENOBU WAKITA , KUNIHIRO UKAI , OSAMU SAKAI , YOICHIRO TSUJI
IPC: H01M8/18 , H01M8/04746
Abstract: A hydrogen supply system includes: an electrochemical hydrogen pump including an electrolyte membrane, an anode and a cathode provided to a first and second main surfaces of the electrolyte membrane, respectively, an anode flow path and cathode flow path through which hydrogen flows, and a voltage applicator applying a voltage between the anode and cathode, pressurizing and sending hydrogen supplied to the anode via the anode flow path to the cathode by applying a voltage by the voltage applicator, and supplying the pressurized hydrogen in the cathode flow path to a hydrogen reservoir; a pressure adjuster adjusting a cathode flow path pressure; and a controller controlling the pressure adjuster and making the cathode flow path pressure higher than an anode flow path pressure before starting a hydrogen pressurization action for pressurizing and supplying hydrogen supplied to the anode flow path to the cathode flow path.
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公开(公告)号：US20240318339A1
公开(公告)日：2024-09-26
申请号：US18733054
申请日：2024-06-04
Inventor： TAKAYUKI NAKAUE , OSAMU SAKAI , HIROMI KITA , YUKIMUNE KANI
CPC classification number: C25B15/083 , C25B1/04 , C25B9/19 , C25B9/75
Abstract: A compression apparatus includes at least one compression unit, an anode end plate provided on an anode separator, a cathode end plate provided on a cathode separator, and a plate-like member. 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 generates compressed hydrogen. The plate-like member is provided with a recess in which to store the compressed hydrogen and a groove portion that surrounds an outer periphery of the recess. The groove portion is provided with a seal material and a ring material that is adjacent to an outer edge of the seal material and that surrounds the seal material. An outer peripheral surface of the groove portion and an outer peripheral surface of the ring material are both provided with gradients so as to become wider toward an opening of the groove portion.
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Patent Agency Ranking
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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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：US20240017210A1
公开(公告)日：2024-01-18
申请号：US18472297
申请日：2023-09-22
Inventor： TAKASHI KAKUWA , OSAMU SAKAI , HIROMI KITA
CPC classification number: B01D53/326 , B01D53/30 , B01D2256/16
Abstract: A compressor device includes: a compressor that causes, by applying a voltage between an anode and a cathode, hydrogen in a hydrogen-containing gas supplied to the anode to move through an electrolyte membrane to the cathode and compresses the hydrogen; a first regulator that regulates the dew point of the hydrogen-containing gas to be supplied to the anode; a second regulator that regulates the temperature of the hydrogen-containing gas to be supplied to the anode; and a controller that controls at least one of the first regulator or the second regulator based on the pressure of the hydrogen-containing gas to be supplied to the anode.
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公开(公告)号：US20210399319A1
公开(公告)日：2021-12-23
申请号：US17464579
申请日：2021-09-01
Inventor： OSAMU SAKAI , YUKIMUNE KANI , TAKASHI KAKUWA , HIROMI KITA , TOMOYA KAMATA , TAKAYUKI NAKAUE
IPC: H01M8/04276 , H01M8/04029
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 first 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. Upon the voltage applicator applying the voltage, the compression apparatus causes hydrogen included in a hydrogen-containing gas fed to the anode to move to the cathode and produces compressed hydrogen. One of the first end plates have a first channel formed therein, through which the hydrogen-containing gas fed to the anode flows, and a second channel formed therein, through which a heating medium flows. The compression apparatus further includes a heater that heats the heating medium.
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