公开(公告)号：US11545687B1

公开(公告)日：2023-01-03

申请号：US16162900

申请日：2018-10-17

Applicant: BLOOM ENERGY CORPORATION

Inventor： Karthick Sudhan ,  Amit Nawathe ,  Abhishek Dudhmande ,  Vijay Radhakrishnan ,  Padiadpu Shankara Anantha

IPC: H01M8/04298 ,  H01M8/0662 ,  H01M8/04089 ,  H01M8/2465

Abstract: A fuel cell system performance recovery method includes applying a DC current load pulse waveform to one or more of the fuel cells for a recovery period sufficient to desorb a contaminant from the one or more fuel cells.

公开(公告)号：US11411233B2

公开(公告)日：2022-08-09

申请号：US16213480

申请日：2018-12-07

Applicant: BLOOM ENERGY CORPORATION

Inventor： Karthick Sudhan Shanmugam ,  Abhishek Dudhmande ,  Amit Nawathe ,  Padiadpu Shankara Anantha ,  Vijay Radhakrishnan

IPC: H01M8/04 ,  H01M8/04664 ,  H01M8/0662 ,  H01M8/04537 ,  H01M8/04858 ,  H01M8/04791 ,  H01M8/04746

Abstract: A fuel cell system and method, the system including power generating fuel cells disposed in a stack, each power generating fuel cell including an anode, a cathode, and an electrolyte, a sensing fuel cell including an anode, a cathode, and an electrolyte, and a fuel processor configured to purify a fuel provided to the power generating fuel cells and the sensing fuel cell. The anode of the sensing fuel cell is thinner than the anodes of the power generating fuel cells.

公开(公告)号：US09461319B2

公开(公告)日：2016-10-04

申请号：US14186642

申请日：2014-02-21

Applicant: Bloom Energy Corporation

Inventor： Karthick Sudhan ,  Amit Nawathe ,  Rohit Srivastava ,  Mohamed Sharif ,  Abhishek Dudhmande ,  Timothy Bekkedahl

IPC: H01M8/04

CPC classification number: H01M8/04649 ,  H01M8/04559 ,  H01M8/04589 ,  Y02E60/50

Abstract: Systems, methods, and devices of the various embodiments provide a hardware and software architecture enabling electrochemical impedance spectroscopy (“EIS”) to be performed on multiple electrochemical devices, such as fuel cells, at the same time without human interaction with the electrochemical devices. In an embodiment, a matrix switch may connect each cell of a fuel cell stack individually to an EIS analyzer enabling EIS to be performed on any fuel cell in the fuel cell stack. In a further embodiment, the EIS analyzer may be a multi-channel EIS analyzer, and the combination of the matrix switch and multi-channel EIS analyzer may enable EIS to be performed on multiple fuel cells simultaneously.

Abstract translation: 各种实施例的系统，方法和装置提供硬化和软件架构，使得能够在多个电化学装置（例如燃料电池）上同时执行电化学阻抗谱（“EIS”），而不与人体与电化学装置相互作用。 在一个实施例中，矩阵开关可以将燃料电池堆的每个电池单独地连接到EIS分析器，使得能够在燃料电池堆中的任何燃料电池上执行EIS。 在另一实施例中，EIS分析器可以是多通道EIS分析器，并且矩阵开关和多通道EIS分析器的组合可以使得能够同时在多个燃料电池上执行EIS。

公开(公告)号：US12142802B2

公开(公告)日：2024-11-12

申请号：US17722059

申请日：2022-04-15

Applicant: BLOOM ENERGY CORPORATION

Inventor： Karthick Sudhan S ,  Bhavana Ganesh ,  Abhishek Dudhmande ,  Ranganathan Gurunathan ,  Ian Russell

IPC: H01M8/04537 ,  H01M8/04298 ,  H01M8/04664 ,  H01M8/04746 ,  H01M8/04858 ,  H01M8/04992

Abstract: Systems, methods, and devices of the various embodiments provide a hardware and software architecture enabling electrochemical impedance spectroscopy (“EIS”) to be performed on multiple electrochemical devices, such as fuel cells, at the same time without human interaction with the electrochemical devices and to use EIS to dynamically monitor the performance of a fuel cell system. Embodiment methods may include determining an impedance of a set of fuel cells using electrochemical impedance spectroscopy, determining an ohmic polarization of the set of fuel cells from the impedance, determining a concentration polarization of the set of fuel cells from the impedance, comparing the ohmic polarization of the set of fuel cells to a first threshold, comparing the concentration polarization of the set of fuel cells to a second threshold, and initiating a corrective action when the ohmic polarization is above the first threshold or when the concentration polarization is below the second threshold.

公开(公告)号：US11335928B2

公开(公告)日：2022-05-17

申请号：US16799371

申请日：2020-02-24

Applicant: BLOOM ENERGY CORPORATION

Inventor： Karthick Sudhan S ,  Bhavana Ganesh ,  Abhishek Dudhmande ,  Ranganathan Gurunathan ,  Ian Russell

IPC: H01M8/04537 ,  H01M8/04298 ,  H01M8/04746 ,  H01M8/04664 ,  H01M8/04858 ,  H01M8/04992

Abstract: Systems, methods, and devices of the various embodiments provide a hardware and software architecture enabling electrochemical impedance spectroscopy (“EIS”) to be performed on multiple electrochemical devices, such as fuel cells, at the same time without human interaction with the electrochemical devices and to use EIS to dynamically monitor the performance of a fuel cell system. Embodiment methods may include determining an impedance of a set of fuel cells using electrochemical impedance spectroscopy, determining an ohmic polarization of the set of fuel cells from the impedance, determining a concentration polarization of the set of fuel cells from the impedance, comparing the ohmic polarization of the set of fuel cells to a first threshold, comparing the concentration polarization of the set of fuel cells to a second threshold, and initiating a corrective action when the ohmic polarization is above the first threshold or when the concentration polarization is below the second threshold.

公开(公告)号：US20200185741A1

公开(公告)日：2020-06-11

申请号：US16213480

申请日：2018-12-07

Applicant: BLOOM ENERGY CORPORATION

Inventor： Karthick Sudhan Shanmugam ,  Abhishek Dudhmande ,  Amit Nawathe ,  Padiadpu Shankara Anantha ,  Vijay Radhakrishnan

IPC: H01M8/04664 ,  H01M8/0662 ,  H01M8/04537 ,  H01M8/04791 ,  H01M8/04746 ,  H01M8/04858

Abstract: A fuel cell system and method, the system including power generating fuel cells disposed in a stack, each power generating fuel cell including an anode, a cathode, and an electrolyte, a sensing fuel cell including an anode, a cathode, and an electrolyte, and a fuel processor configured to purify a fuel provided to the power generating fuel cells and the sensing fuel cell. The anode of the sensing fuel cell is thinner than the anodes of the power generating fuel cells.

公开(公告)号：US10573910B2

公开(公告)日：2020-02-25

申请号：US14853030

申请日：2015-09-14

Applicant: BLOOM ENERGY CORPORATION

Inventor： Karthick Sudhan S ,  Bhavana Ganesh ,  Abhishek Dudhmande ,  Ranganathan Gurunathan ,  Ian Russell

IPC: H01M8/04537 ,  H01M8/04298

Abstract: Systems, methods, and devices of the various embodiments provide a hardware and software architecture enabling electrochemical impedance spectroscopy (“EIS”) to be performed on multiple electrochemical devices, such as fuel cells, at the same time without human interaction with the electrochemical devices and to use EIS to dynamically monitor the performance of a fuel cell system. Embodiment methods may include determining an impedance of a set of fuel cells using electrochemical impedance spectroscopy, determining an ohmic polarization of the set of fuel cells from the impedance, determining a concentration polarization of the set of fuel cells from the impedance, comparing the ohmic polarization of the set of fuel cells to a first threshold, comparing the concentration polarization of the set of fuel cells to a second threshold, and initiating a corrective action when the ohmic polarization is above the first threshold or when the concentration polarization is below the second threshold.

公开(公告)号：US20150244011A1

公开(公告)日：2015-08-27

申请号：US14186642

申请日：2014-02-21

Applicant: Bloom Energy Corporation

Inventor： Karthick Sudhan S ,  Amit Nawathe ,  Rohit Srivastava ,  Mohamed Sharif ,  Abhishek Dudhmande ,  Timothy Bekkedahl

IPC: H01M8/04

CPC classification number: H01M8/04649 ,  H01M8/04559 ,  H01M8/04589 ,  Y02E60/50

Abstract: Systems, methods, and devices of the various embodiments provide a hardware and software architecture enabling electrochemical impedance spectroscopy (“EIS”) to be performed on multiple electrochemical devices, such as fuel cells, at the same time without human interaction with the electrochemical devices. In an embodiment, a matrix switch may connect each cell of a fuel cell stack individually to an EIS analyzer enabling EIS to be performed on any fuel cell in the fuel cell stack. In a further embodiment, the EIS analyzer may be a multi-channel EIS analyzer, and the combination of the matrix switch and multi-channel EIS analyzer may enable EIS to be performed on multiple fuel cells simultaneously

Abstract translation: 各种实施例的系统，方法和装置提供硬化和软件架构，使得能够在多个电化学装置（例如燃料电池）上同时执行电化学阻抗谱（“EIS”），而不与人体与电化学装置相互作用。 在一个实施例中，矩阵开关可以将燃料电池堆的每个电池单独地连接到EIS分析器，使得能够在燃料电池堆中的任何燃料电池上执行EIS。 在另一个实施例中，EIS分析器可以是多通道EIS分析器，并且矩阵开关和多通道EIS分析器的组合可以使得能够同时在多个燃料电池上执行EIS