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：US12009558B2

公开(公告)日：2024-06-11

申请号：US17551192

申请日：2021-12-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takeshi Terayama ,  Tomohiro Kuroha ,  Kyohei Kawada

IPC: H01M8/04746 ,  H01M8/04303 ,  H01M8/12 ,  H01M8/1213

CPC classification number: H01M8/04753 ,  H01M8/04303 ,  H01M8/1213 ,  H01M2008/1293

Abstract: A fuel cell system according to the present disclosure includes: a solid oxide fuel cell that produces electricity from an electrochemical reaction by using a fuel and air and that includes a membrane electrode assembly including a proton-conductive electrolyte membrane, a cathode disposed on a first main surface of the electrolyte membrane, and an anode disposed on a second main surface of the electrolyte membrane; and a controller. In the operation stop process for stopping operation of the fuel cell system, the controller is configured to control supply of the fuel at a higher flow rate than the flow rate of the fuel consumed in the solid oxide fuel cell in an open circuit state.

公开(公告)号：US12009556B2

公开(公告)日：2024-06-11

申请号：US17807107

申请日：2022-06-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takeshi Terayama ,  Tomohiro Kuroha ,  Kyohei Kawada

IPC: H01M8/04 ,  H01M8/04089 ,  H01M8/04303 ,  H01M8/04858 ,  H01M8/1004 ,  H01M8/1016

CPC classification number: H01M8/04303 ,  H01M8/04089 ,  H01M8/04873 ,  H01M8/1004 ,  H01M8/1016

Abstract: The fuel cell system of the present disclosure includes: a fuel cell that includes a membrane electrode assembly including a proton conducting ceramic electrolyte membrane, a cathode disposed on a first surface of the electrolyte membrane, and an anode disposed on a second surface of the electrolyte membrane, the fuel cell generating electric power through an electrochemical reaction using a fuel gas and an oxidant gas; a power source that applies a voltage to the fuel cell; and a controller. In a shutdown process, the controller controls the power source to apply the voltage to the fuel cell such that a terminal voltage of the fuel cell is equal to or higher than an open circuit voltage of the fuel cell.