公开(公告)号：US11196075B2

公开(公告)日：2021-12-07

申请号：US16533461

申请日：2019-08-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shigenori Onuma ,  Tomohiro Kuroha

IPC: H01M8/0432 ,  H01M8/22 ,  H01M8/04029 ,  H01M8/04044 ,  H01M8/04089 ,  H01M50/10

Abstract: A fuel cell system includes a fuel cell stack constituted by cells, each of the cells includes a fuel electrode, an air electrode, and an electrolyte, and generate electric power through a reaction of a fuel gas and air, a casing that houses the fuel cell stack, a temperature detector that detects a first temperature, the first temperature is a temperature of the fuel cell stack or inside the casing, and a controller. The controller controls based on the first temperature so as to allow an operation at a first predetermined temperature. The controller controls such that the first temperature reaches a temperature higher than or equal to a second predetermined temperature for a predetermined time. The second predetermined temperature is a temperature at which 475° C. embrittlement that occurs on stainless steel is eliminated. The first predetermined temperature is lower than the second predetermined temperature.

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：US10985386B2

公开(公告)日：2021-04-20

申请号：US16296163

申请日：2019-03-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takehito Goto ,  Shigenori Onuma ,  Tomohiro Kuroha

IPC: H01M8/0282 ,  H01M8/1253 ,  H01M8/124

Abstract: The fuel cell of the present disclosure includes: a unit cell including: a fuel electrode, an air electrode and electrolyte disposed between the fuel electrode and the air electrodes; a separator for separating a fuel gas flowing though the fuel electrode and air flowing through the air electrode; and a sealing constituted of a glass composition for bonding the separator and the electrolyte, and at least a surface region of the sealing portion exposed to the fuel gas and the air does not contain Ba.