公开(公告)号：US09929418B2

公开(公告)日：2018-03-27

申请号：US14556179

申请日：2014-11-30

Applicant: Hyundai Motor Company

Inventor： Kwi Seong Jeong ,  Haeng Jin Ko ,  Young Bum Kum ,  Sang Bok Won

IPC: H01M8/04 ,  H01M8/04492 ,  H01M8/04746 ,  H01M8/04537 ,  H01M8/04992 ,  G01R31/36

CPC classification number: H01M8/04492 ,  G01R31/3651 ,  G01R31/3662 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04649 ,  H01M8/04753 ,  H01M8/04761 ,  H01M8/04992 ,  H01M2250/20 ,  Y02T90/32

Abstract: A system and method for diagnosing the state of a fuel cell stack are provided. The method includes simultaneously applying currents having respective first and second frequencies to a fuel cell stack and computing Fourier transforms of output currents and voltages from the fuel cell stack based on the applied currents. A real part of a first frequency impedance and an imaginary part of a second frequency impedance are calculated using amplitudes and phases of currents and voltages having the first frequency and the second frequency among the computed output currents and voltages. Further, a state of the fuel cell stack is determined by magnitude of the calculated real part of the first frequency impedance and by magnitude of the calculated imaginary part of the second frequency impedance.

公开(公告)号：US09627707B1

公开(公告)日：2017-04-18

申请号：US15173438

申请日：2016-06-03

Applicant: HYUNDAI MOTOR COMPANY

Inventor： Haeng Jin Ko ,  Yong Suk Heo

IPC: H01M8/24 ,  H01M8/249 ,  H01M8/2465 ,  H01M8/2475 ,  H01M2/10

CPC classification number: H01M8/2465 ,  H01M2/1016 ,  H01M8/2475 ,  H01M8/249 ,  H01M2250/20 ,  Y02T90/32

Abstract: A device for preventing deformation of a fuel cell stack module includes vertical plates and a horizontal plate, The vertical plates and the horizontal plate are combined to form a deformation prevention frame and disposed between a plurality of fuel cell stack modules, which is vertically stacked, and on both surfaces of the respective fuel cell stack modules which are perpendicular to an end plate. Each of the plurality of fuel cell stacks includes an end plate disposed perpendicular to the vertical plates.