A battery electric system includes a battery, sensor suite, and controller. The sensor suite includes a current sensor, voltage sensor, and temperature sensor. The controller is operable for determining an estimated open circuit voltage of the battery at different time points using a current signal and a voltage signal from the current and voltage sensors, and an equivalent circuit model (ECM). The controller determines an ECM-based state of charge (SOC) of the battery at the different time points, via a calibrated SOC map, using the open circuit voltage and temperature, and calculates a sensor gain value using the ECM-based SOC and a coulomb counting-based SOC, both at the different time points. A control action is executed with respect to the battery when the sensor gain value exceeds a predetermined gain fault threshold, including generating a fault notification signal indicative of a fault of the current sensor.

A device for protecting a converter and a control method thereof, the device including: a voltage detection unit that detects at least one of an input-stage voltage and an output-stage voltage of a converter; a switching device that connects an output stage of the converter and a load connected to the output stage, or blocks a connection; a controller that determines whether the detected input-stage voltage or output-stage voltage is out of a preset voltage range, and, when the voltage is out of the range, controls the switching device to cut off the connection between the output stage of the converter and the load; and a driving unit that controls an operation of at least one of the fuel cell and the battery so that a driving force of the vehicle is not generated by the fuel cell and the battery when the connection is cut off.

Embodiments of the present invention provide a method of controlling a high-voltage circuit (15) of a vehicle, comprising detecting (310) a fault associated with the high-voltage circuit, reducing (320) a voltage of the high-voltage circuit (15) in dependence on detecting the fault, receiving (330) a torque request and, in dependence thereon, increasing (340) the voltage of the high-voltage circuit (15).

An electronic control circuit with a backup energy source subassembly for an e-latch assembly and a method of operating the backup energy source subassembly are disclosed. The electronic control circuit includes a control unit including a computing module and a memory for electrically coupling to a plurality of sensors and to a main power source. The backup energy source subassembly is electrically coupled to the control unit for providing electrical energy to the electronic control circuit in response to one of a failure and interruption of the main power source. An output module is electrically connected to the backup energy source subassembly and to the main power source for driving an actuation group. The backup energy source subassembly includes a backup low voltage source and a boost-buck converter configured to selectively supply voltage to and selectively amplify voltage from the backup low voltage source.

A battery management and monitoring system integrated in a battery pack configured for use in electric aircraft. The system includes a sensor suite configured to measure a plurality of battery pack data. The system includes a battery monitoring component configured to detect a first fault in the battery pack and produce a first fault detection response notifying a user of the first fault in the battery pack. The system includes a battery management component configured to detect a second fault in the battery pack and produce a second fault detection response configured to mitigate the second fault in the battery pack. The system includes an interlock component having a first mode and a second mode, configured to enable the battery monitoring component and disable the battery management component when in the first mode and enable the battery management component and disable the battery monitoring component when in the second mode.

A method for the diagnosis of the offset of the resolver of an electric motor, comprising acquiring a predetermined offset of a resolver associated with the electric motor; in a first transient, supplying an excitation current to the phases of the electric motor. As a consequence of the excitation current, a current established on the axis d of minimum reluctance and a current established on an axis q in phase quadrature with respect to the axis of minimum reluctance are determined. The correctness of the offset of the resolver is diagnosed if the current established on the axis d in the first transient is higher than the current established on the axis d in the second or third transient, and if the current established on the axis q in the first transient is lower than the current established on the axis q in the second or third transient.

In order to detect failure of a charge/discharge current sensor for a battery and estimate and manage the state of charge of the battery when the charge/discharge current sensor has failed, provided are: a state-of-charge estimation unit for estimating the state of charge of the battery; an operation current estimation unit for estimating operation current of an electric load connected to the battery; and a charge/discharge current sensor failure detection unit for determining that failure occurs on the charge/discharge current sensor for detecting charge/discharge current of the battery, when a difference between the charge/discharge current and the operation current estimation value is equal to or greater than a predetermined value, wherein, when failure of the charge/discharge current sensor is detected, the electric load is operated at low output, and the state of charge of the battery is estimated using the operation current estimation value.

A battery management and monitoring system integrated in a battery pack configured for use in electric aircraft. The system includes a sensor suite configured to measure a plurality of battery pack data. The system includes a battery monitoring component configured to detect a first fault in the battery pack and produce a first fault detection response notifying a user of the first fault in the battery pack. The system includes a battery management component configured to detect a second fault in the battery pack and produce a second fault detection response configured to mitigate the second fault in the battery pack. The system includes an interlock component having a first mode and a second mode, configured to enable the battery monitoring component and disable the battery management component when in the first mode and enable the battery management component and disable the battery monitoring component when in the second mode.

An electric motorcycle includes a driving command detecting device, a state value detecting device, an electric motor driving a drive wheel, a control unit for executing a non-normal mode causing output of the electric motor in a non-normal mode to differ from the output of the electric motor in a normal mode, the control unit configured to shift the electric motorcycle from one of the normal or non-normal modes to the other normal or non-normal mode, when the state value satisfies a predetermined shift condition, in one of the normal and non-normal modes, and a cornering determiner unit for determining cornering status, wherein the control unit causes a change in the output of the electric motor to be less, when the electric motorcycle is cornering and the shift condition is satisfied than when the cornering determiner unit determines the electric motorcycle is not cornering and the shift condition is satisfied.

Systems and methods for storing energy for use by an electric vehicle are disclosed. Systems can include an electric vehicle battery pack including a rack configured to couple a plurality of independently removable battery strings to the vehicle, the battery strings configured to be selectively coupled in parallel to a vehicle power bus. The battery strings may include a housing, a plurality of electrochemical cells disposed within the housing, a circuit for electrically connecting the electrochemical cells, a positive high-voltage connector, a negative high-voltage connector, a switch within the housing, and a string control unit configured to control the switch. Each battery string can include a coolant inlet and a coolant outlet configured to couple with and sealingly uncouple from an external coolant supply conduit and an external coolant return conduit, and an auxiliary connector configured to couple with an external communications system and/or an external low-voltage power supply.