公开(公告)号：US09653743B2

公开(公告)日：2017-05-16

申请号：US14550926

申请日：2014-11-22

申请人： Hyundai Motor Company

发明人： Sang Yeoul Ahn ,  Tae Won Lim ,  Byung Ki Ahn ,  Hyun Seung Lee ,  Yong Sun Park ,  Sung Keun Lee

IPC分类号： H01M8/04 ,  H01M8/04664 ,  H01M8/0438 ,  H01M8/04746 ,  H01M8/1018

CPC分类号： H01M8/04671 ,  H01M8/04432 ,  H01M8/04783 ,  H01M2008/1095

摘要： Disclosed herein is a method of detecting defects of a fuel cell membrane-electrode assembly which comprises a gas diffusion layer, a catalyst layer and an electrolyte membrane. The method includes steps of: supplying gas to a first side of the membrane-electrode assembly; deducing a pressure of the supplied gas and a permeation rate of the gas permeating to a second side of the membrane-electrode assembly and then deducing an interface pressure between the electrolyte membrane and the gas diffusion layer of the membrane-electrode assembly using the deduced pressure of the supplied gas and the permeation rate; calculating a gas permeability of the electrolyte membrane using the deduced values of the pressure of the supplied gas and the permeation rate and a predetermined outlet pressure at the second side of the membrane-electrode assembly; and determining a defect state of the electrolyte membrane using a variation in the calculated gas permeability according to a change in the pressure of the supplied gas.

公开(公告)号：US20240243313A1

公开(公告)日：2024-07-18

申请号：US18521260

申请日：2023-11-28

申请人： HYUNDAI MOTOR COMPANY ,  KIA CORPORATION

发明人： Hyun Seung Lee

IPC分类号： H01M8/04664 ,  H01M8/04089 ,  H01M8/04746 ,  H01M8/04858

CPC分类号： H01M8/04679 ,  H01M8/04097 ,  H01M8/04753 ,  H01M8/0494

摘要： A fuel cell system and a fuel cell system control method are proposed. The fuel cell system includes a controller configured to control the opening ratio of an air recirculation valve or the speed of a hydrogen recirculation pump according to the required output of the fuel cell stack and a magnitude of an output voltage or output current.

公开(公告)号：US20160013500A1

公开(公告)日：2016-01-14

申请号：US14550926

申请日：2014-11-22

申请人： Hyundai Motor Company

发明人： Sang Yeoul Ahn ,  Tae Won Lim ,  Byung Ki Ahn ,  Hyun Seung Lee ,  Yong Sun Park ,  Sung Keun Lee

IPC分类号： H01M8/04

CPC分类号： H01M8/04671 ,  H01M8/04432 ,  H01M8/04783 ,  H01M2008/1095

摘要： Disclosed herein is a method of detecting defects of a fuel cell membrane-electrode assembly which comprises a gas diffusion layer, a catalyst layer and an electrolyte membrane. The method includes steps of: supplying gas to a first side of the membrane-electrode assembly; deducing a pressure of the supplied gas and a permeation rate of the gas permeating to a second side of the membrane-electrode assembly and then deducing an interface pressure between the electrolyte membrane and the gas diffusion layer of the membrane-electrode assembly using the deduced pressure of the supplied gas and the permeation rate; calculating a gas permeability of the electrolyte membrane using the deduced values of the pressure of the supplied gas and the permeation rate and a predetermined outlet pressure at the second side of the membrane-electrode assembly; and determining a defect state of the electrolyte membrane using a variation in the calculated gas permeability according to a change in the pressure of the supplied gas.

摘要翻译： 本发明公开了一种检测包括气体扩散层，催化剂层和电解质膜的燃料电池膜 - 电极组件的缺陷的方法。 该方法包括以下步骤：向膜 - 电极组件的第一侧供应气体; 推断供给气体的压力和渗透到膜 - 电极组件的第二侧的气体的渗透速度，然后使用推导压力推导电解质膜和膜 - 电极组件的气体扩散层之间的界面压力 的供应气体和渗透速率; 使用所提供的气体的压力的推导值和膜电极组件的第二侧的渗透速率和预定出口压力来计算电解质膜的气体渗透性; 以及根据供给气体的压力变化，使用所计算的气体渗透性的变化来确定电解质膜的缺陷状态。

公开(公告)号：US20230125311A1

公开(公告)日：2023-04-27

申请号：US17873710

申请日：2022-07-26

申请人： Hyundai Motor Company ,  Kia Corporation

发明人： Hyun Seung Lee

IPC分类号： H01M8/04746 ,  H01M8/0438 ,  H01M8/0267 ,  H01M8/04029 ,  H01M8/04089 ,  H01M8/04302 ,  H01M8/0432 ,  H01M8/04537 ,  H01M8/04664

摘要： Disclosed is a method and a device configured to control deterioration avoidance operation of a fuel cell system. In one aspect, the method may include starting the deterioration avoidance operation when an operation of a fuel cell is restarted in a state where an energy storage device is operating, and the fuel cell is stopped; controlling anode hydrogen pressure based on a predetermined condition, the condition indicating that the anode hydrogen pressure needs to be increased; determining hydrogen recirculation and supplying hydrogen including a process to determine whether to recirculate hydrogen based on a predetermined condition, the condition indicating that hydrogen needs to be recirculated, before supplying hydrogen; determining air recirculation and supplying air including a process to determine whether to recirculate air based on a predetermined condition, the condition indicating that air needs to be recirculated, before supplying air; and terminating the deterioration avoidance operation and starting operation of the fuel cell.

公开(公告)号：US20230037634A1

公开(公告)日：2023-02-09

申请号：US17859678

申请日：2022-07-07

申请人： HYUNDAI MOTOR COMPANY ,  KIA CORPORATION

发明人： Hyun Seung Lee

IPC分类号： H01M8/04664 ,  H01M8/04537 ,  H01M8/04089 ,  H01M8/04302 ,  H01M8/04746 ,  H01M8/04828 ,  H01M8/04858

摘要： A fuel cell deterioration prevention system includes a cell voltage stability determination unit determining cell voltage stability according to a preset operating condition, a fuel cell deterioration diagnosing unit diagnosing deterioration of a fuel cell by changing and controlling a control variable pre-selected according to an operating condition and monitoring a resultant change in the cell voltage of the fuel cell, and a deterioration avoidance operation control unit performing a deterioration avoidance operation based on a diagnosis result of the fuel cell deterioration diagnosing unit.