公开(公告)号：US12044741B1

公开(公告)日：2024-07-23

申请号：US17851804

申请日：2022-06-28

Applicant: Amazon Technologies, Inc.

Inventor： Larry W. Juang ,  Jianqi Shang ,  Jordan Joseph Proulx Cearns ,  Christien Samson Miller ,  Marcelino Vazquez Montano ,  Frederic Pierre Lacaux

IPC: G01R31/3842 ,  B60L58/24 ,  B64C39/02 ,  B64D27/24 ,  B64D47/00 ,  G01K1/02 ,  G01R31/374 ,  G01R31/389 ,  G01R31/396 ,  H02J7/00 ,  B60L58/12 ,  B64U50/19

CPC classification number: G01R31/389 ,  B64C39/024 ,  B64D27/24 ,  B64D47/00 ,  G01K1/026 ,  G01R31/374 ,  G01R31/3842 ,  G01R31/396 ,  H02J7/0013 ,  H02J7/0029 ,  H02J7/0047 ,  B60L58/12 ,  B60L58/24 ,  B60L2200/10 ,  B64U50/19

Abstract: Described are systems and methods for monitoring and detecting thermal conditions associated with individual cells of a battery. Embodiments of the present disclosure may monitor, detect, and protect against thermal anomalies that may be experienced at individual cells of a battery, without employing the use of thermal sensors (e.g., a thermocouple, thermistor, etc.). The exemplary systems and methods may be implemented in connection with a battery and/or battery pack having cells arranged in a serial configuration that may be employed in an aerial vehicle, such as an unmanned aerial vehicle (UAV). The described systems and methods detect thermal conditions associated with the individual cells of a battery by modeling each cell as an RC circuit and determining the resistance of each cell based on voltage and current measurements. The determined resistance can approximate and/or be representative of the temperature of the respective cell.

公开(公告)号：US12151565B1

公开(公告)日：2024-11-26

申请号：US17934068

申请日：2022-09-21

Applicant: Amazon Technologies, Inc.

Inventor： Frederic Pierre Lacaux ,  Xiaoqi Wang ,  Jianqi Shang ,  Larry W. Juang ,  Andrew Lueneburg

IPC: B60L3/00 ,  B64D27/24 ,  B64U50/19

Abstract: Described are systems and methods for providing a fault tolerant electrical power system that is configured to continue operating through various fault and/or failure conditions, so as to withstand certain single points of fault and/or failure conditions. Exemplary embodiments of the present disclosure can provide an exemplary electrical power system that includes various components that are electrically coupled to a shared direct current (DC) bus via protection devices that are configured to isolate the various components in the event of certain fault and/or failure conditions. Additionally, the exemplary electrical power system can also include a high-impedance midpoint grounding connection configured to shift the voltages of the shared DC bus in view of certain fault and/or failure conditions, as well as introducing certain separations (e.g., physical and/or electrical) to mitigate the possibility of certain faults and/or failure conditions.