Abstract: Systems and methods related to redundant battery management systems (BMS) may include an on-battery BMS, and one or more off-battery, off-vehicle, and/or remote BMS. The one or more remote BMS may receive data associated with parameters of a battery, and may process the received data using various models, algorithms, or estimators to determine a battery state. The battery state determined by the remote BMS may then be used to corroborate or support a battery state determined by the on-battery BMS, thereby ensuring safe, reliable, and efficient operations of systems, machines, or devices utilizing batteries as power sources.

Abstract: Systems and methods to maintain a fleet of aerial vehicles may include a maintenance system, a charging power source, and a control system. For example, the maintenance system may include a plurality of workstations to perform maintenance tasks, a charging rail that connects the workstations with the charging power source, and a plurality of platforms that move along the charging rail. The control system may instruct a platform to receive an aerial vehicle, couple the aerial vehicle to the charging rail, move the aerial vehicle among the workstations, and charge a battery of the aerial vehicle via the charging rail during movement and/or performance of various maintenance tasks.

Abstract: Systems and methods to measure states of charge of a battery may include an ultrasonic sensor and a control system. For example, the control system may instruct the ultrasonic sensor to emit ultrasonic waves toward a battery, and may instruct the ultrasonic sensor to receive echoes of the emitted ultrasonic waves reflected back from the battery. In addition, the control system may process data associated with the emitted waves and received echoes, including properties associated with the waves and echoes, such as a time of flight, frequency, amplitude, wavelength, phase, duration, or others. Based on the properties of the received echoes, and by comparison with expected properties, various physical, mechanical, chemical, and/or material characteristics of the battery may be determined, based on which a state of charge and/or a state of health of the battery may further be determined.

Abstract: Systems and methods to maintain a fleet of batteries may include a plurality of electrically connected batteries and a control system. For example, the connected batteries may be stored and connected via a cabinet or rack. The control system may determine desired states of charge and/or desired storage temperatures for the connected batteries, in order to maintain at least one battery available to meet demand while also minimizing an aging rate of the fleet of batteries. Accordingly, the control system may adjust states of charge associated with the fleet of batteries to the desired states of charge, which may include various distributions of states of charge, and the control system may also adjust storage temperatures associated with the fleet of batteries.

Abstract: Systems and methods to measure states of charge of a battery may include an ultrasonic sensor and a control system. For example, the control system may instruct the ultrasonic sensor to emit ultrasonic waves toward a battery, and may instruct the ultrasonic sensor to receive echoes of the emitted ultrasonic waves reflected back from the battery. In addition, the control system may process data associated with the emitted waves and received echoes, including properties associated with the waves and echoes, such as a time of flight, frequency, amplitude, wavelength, phase, duration, or others. Based on the properties of the received echoes, and by comparison with expected properties, various physical, mechanical, chemical, and/or material characteristics of the battery may be determined, based on which a state of charge and/or a state of health of the battery may further be determined.

Abstract: Systems and methods to maintain a fleet of aerial vehicles may include a maintenance system, a charging power source, and a control system. For example, the maintenance system may include a plurality of workstations to perform maintenance tasks, a charging rail that connects the workstations with the charging power source, and a plurality of platforms that move along the charging rail. The control system may instruct a platform to receive an aerial vehicle, couple the aerial vehicle to the charging rail, move the aerial vehicle among the workstations, and charge a battery of the aerial vehicle via the charging rail during movement and/or performance of various maintenance tasks.