公开(公告)号：US11329303B2

公开(公告)日：2022-05-10

申请号：US16451165

申请日：2019-06-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shigenori Onuma ,  Takashi Kakuwa ,  Yuichi Mikami ,  Tomohiro Kuroha

IPC: H01M8/04955 ,  H01M8/0432 ,  H01M8/04537 ,  H01M8/04746 ,  H01M8/04858 ,  H01M8/0612 ,  H01M8/1253 ,  H01M8/12

Abstract: A fuel cell system includes: a fuel cell stack including a plurality of cells, each of which has a fuel electrode, an air electrode, and an electrolyte, and performs a power generation by a reaction between a fuel gas and air; a fuel supplier supplying the fuel gas to the fuel electrode; an air supplier supplying the air to the air electrode; a voltage detector detecting the voltage of the fuel cell stack; and a controller stopping the supplying of the fuel gas by the fuel supplier and the supplying of the air by the air supplier when the voltage of the fuel cell stack detected by the voltage detector is decreased to be lower than a threshold voltage after the power generation of the fuel cell stack is stopped.

公开(公告)号：US10826075B2

公开(公告)日：2020-11-03

申请号：US15472435

申请日：2017-03-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kosuke Yamauchi ,  Takehito Goto ,  Tomoya Kamata ,  Yuichi Mikami ,  Tomohiro Kuroha ,  Atsuo Okaichi ,  Yoichiro Tsuji ,  Yuji Okuyama

IPC: H01M4/90 ,  H01M4/86 ,  H01M8/0612 ,  H01M8/1213 ,  H01M8/1226 ,  H01M8/1246 ,  H01M8/1253 ,  H01M8/124 ,  C01F11/00 ,  C01G25/00 ,  G01N27/407

Abstract: A membrane electrode assembly of an electrochemical device includes a proton conductive solid electrolyte membrane and an electrode including Ni and an electrolyte material which contains as a primary component, at least one of a first compound having a composition represented by BaZr1-x1M1x1O3 (M1 represents at least one element selected from trivalent elements each having an ion radius of more than 0.720 A° to less than 0.880 A°, and 0

公开(公告)号：US11335930B2

公开(公告)日：2022-05-17

申请号：US16384467

申请日：2019-04-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yukimune Kani ,  Yuichi Mikami ,  Takeshi Terayama

IPC: H01M8/04 ,  H01M8/04858 ,  H01M8/04119 ,  H01M8/04082 ,  H01M8/0432 ,  H01M8/04746 ,  H01M8/1004 ,  H01M8/0438

Abstract: A fuel cell system includes a fuel feeder that supplies fuel, a fuel cell stack that generates power through an electrochemical reaction using air and a hydrogen-containing gas generated from the fuel, a first temperature sensor that senses the temperature of the fuel cell stack, and a controller. The fuel cell stack has a membrane electrode assembly including an electrolyte membrane through which protons can pass, a cathode on one side of the electrolyte membrane, and an anode on the other side of the electrolyte membrane. The controller defines an upper limit of current output from the fuel cell stack on the basis of the temperature of the fuel cell stack, the supply of the fuel, and the hydrogen consumption of the fuel cell stack associated with internal leakage current and keeps the current output from the fuel cell stack at or below the upper limit.

公开(公告)号：US11515546B2

公开(公告)日：2022-11-29

申请号：US17028009

申请日：2020-09-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kosuke Yamauchi ,  Takehito Goto ,  Tomoya Kamata ,  Yuichi Mikami ,  Tomohiro Kuroha ,  Atsuo Okaichi ,  Yoichiro Tsuji ,  Yuji Okuyama

IPC: H01M4/90 ,  H01M4/86 ,  H01M8/1213 ,  H01M8/0612 ,  H01M8/1226 ,  H01M8/1246 ,  H01M8/1253 ,  H01M8/12 ,  C01F11/00 ,  G01N27/407 ,  C01G25/00

Abstract: A membrane electrode assembly of an electrochemical device includes a proton conductive solid electrolyte membrane and an electrode including Ni and an electrolyte material which contains as a primary component, at least one of a first compound having a composition represented by BaZr1-x1M1x1O3 (M1 represents at least one element selected from trivalent elements each having an ion radius of more than 0.720 A° to less than 0.880 A°, and 0

公开(公告)号：US11127963B2

公开(公告)日：2021-09-21

申请号：US16280041

申请日：2019-02-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takashi Kakuwa ,  Shigenori Onuma ,  Yuichi Mikami

IPC: H01M8/04955 ,  H01M8/04303 ,  H01M8/0432 ,  H01M8/04701 ,  H01M8/04746 ,  H01M8/0612 ,  H01M8/1233 ,  H01M8/124

Abstract: A SOFC system includes: a fuel cell stack; a reformer; an air supplier: a combustor; and a controller. In a stop control of the above system, the controller calculates an average of ratios of the air to the raw material supplied to the reformer as a first average, in a case in which a molar fraction of a hydrogen component in the anode off-gas is higher than a molar fraction of a raw material component in the anode off-gas, and calculates the average of the ratios of the air to the raw material supplied to the reformer as a second average, in a case in which the molar fraction of the hydrogen component in the anode off-gas is lower than the molar fraction of the raw material component in the anode off-gas. The controller controls the air supplier so that the first average is higher than the second average.

公开(公告)号：US10763531B2

公开(公告)日：2020-09-01

申请号：US16195857

申请日：2018-11-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kosuke Yamauchi ,  Yuichi Mikami ,  Tomohiro Kuroha ,  Yuji Okuyama

IPC: H01M8/1213 ,  H01M4/90 ,  H01M8/1253 ,  C04B35/626 ,  C04B35/638 ,  C04B35/488 ,  H01M8/124

Abstract: A proton conductor of the present disclosure has a composition formula of BaaZr1-x-yYbxNiyO3-δ (0.95≤a≤1.05, 0.1≤x≤0.4, and 0.15≤y≤0.30).