公开(公告)号：US10809308B2

公开(公告)日：2020-10-20

申请号：US16233323

申请日：2018-12-27

申请人： BLOOM ENERGY CORPORATION

发明人： Arne Ballantine ,  Ranganathan Gurunathan ,  Anilkumar Vishnuvarjula ,  Chockkalingam Karuppaiah

IPC分类号： G01R31/389 ,  H01M10/44 ,  G01R31/392 ,  G01R31/396 ,  G01R31/382 ,  H01M10/48

摘要： A method includes selecting a test waveform to inject to a battery from a first DC converter, determining a first resulting ripple that will be generated in response to injecting the test waveform, determining at least one offset waveform to inject to at least one second DC power source from at least one second DC converter such that one or more second ripples will be provided that will cancel the first resulting ripple if the battery is charging, injecting the test waveform to the battery, injecting the at least one offset waveform to the at least one second DC power source, determining if the first resulting ripple has been cancelled, and determining if the battery is charging or discharging based on the step of determining if the first resulting ripple has been cancelled.

公开(公告)号：US10989760B2

公开(公告)日：2021-04-27

申请号：US16233303

申请日：2018-12-27

申请人： BLOOM ENERGY CORPORATION

发明人： Arne Ballantine ,  Ranganathan Gurunathan ,  Anilkumar Vishnuvarjula ,  Chockkalingam Karuppaiah

IPC分类号： G01R31/389 ,  G01R31/382 ,  G01R31/392 ,  H01M10/44 ,  H01M10/48 ,  G01R31/396 ,  H02M7/44

摘要： A method includes selecting a test waveform to inject from a first DC converter to at least one first DC power source other than a fuel cell, determining a first resulting ripple that will be generated in response to injecting the test waveform onto the battery, determining at least one offset waveform to inject from at least one second DC converter to at least one second DC power source to generate one or more second ripples which cancel the first resulting ripple, injecting the test waveform from the first DC converter to the at least one first DC power source, injecting the at least one offset waveform from the at least one second DC converter to the at least one second DC power source, and determining a characteristic of the first DC power source based at least in part on the impedance response of the first DC power source.

公开(公告)号：US09461320B2

公开(公告)日：2016-10-04

申请号：US14619779

申请日：2015-02-11

申请人： BLOOM ENERGY CORPORATION

发明人： Arne Ballantine ,  Ranganathan Gurunathan ,  Prasad Pmsvvsv ,  Anilkumar Vishnuvarjula

IPC分类号： H01M8/04 ,  H01M8/24 ,  H02M1/14

CPC分类号： H01M8/04649 ,  H01M8/04679 ,  H01M8/04753 ,  H01M8/249 ,  H01M2250/10 ,  H02M1/14 ,  Y02B90/14

摘要： Systems, methods, and devices of the various embodiments enable electrochemical impedance spectroscopy (“EIS”) to be performed on electrochemical devices, such as fuel cell stack segments, by power electronics connecting the electrochemical devices in parallel to a common load and/or bus. In an embodiment, the power electronics may compensate for any ripple generated during EIS such that no ripple is realized at the common load and/or bus.

摘要翻译： 各种实施方案的系统，方法和装置使得电化学阻抗谱（“EIS”）能够在诸如燃料电池堆段之类的电化学装置上通过电力电子装置将电化学装置并联连接到公共负载和/或总线 。 在一个实施例中，功率电子器件可以补偿在EIS期间产生的任何纹波，使得在公共负载和/或总线处不实现纹波。