A safety circuit for a high-voltage (HV) electrical system and a HV electrical device are disclosed. The HV electrical system includes one or more one HV electrical devices. Each HV electrical device includes a low-voltage electrical line. A resistor is connected in parallel to the low-voltage electrical line. A controller is connected to the HV electrical device through the low-voltage electrical line.

The redundancy control device includes three controllers that output status signals, a majority voting circuit to which a first voltage or a second voltage is supplied as an output signal through an output line of each controller, a switch provided in each output line, a voltage supply unit provided for each output line to supply the second voltage to the output line when the first voltage is lost, a latch circuit provided for each output line to latch the second voltage when the second voltage is supplied thereto and continue to output the second voltage, a comparison circuit provided for each controller to output a comparison signal based on a comparison of the status signals, and a switch control unit provided for each switch to outputs a switch signal to the switch in response to the comparison signal from the comparison circuit.

Disclosed herein are systems and methods for energy management. A system, such as a vehicle, includes a plurality of energy storage units that include a supercapacitor and an electrochemical battery. The system includes plurality of energy storage units including a supercapacitor and an electrochemical battery, the supercapacitor comprising a plurality of selectable power sources. The system includes a processor configured to detect a connection of an external charging system to recharge at least one of a supercapacitor and the electrochemical battery, wherein the supercapacitor comprises selectable power sources; in response to detecting the connection of the external charging system, determine whether a fault exists and is associated with at least one of charging or discharging; and control the charging the supercapacitor based on whether the fault exists.

The invention relates to a method for the external monitoring of a converter (10), the converter (10) being controlled by means of a first electronic control system (12) and the method being implemented by means of a second electronic control system (14) which is independent from the first electronic control system (12). Said method comprises detection (S1) of a current (I) received by the converter (10) and a voltage (U) received by the converter (10) by means of a current/voltage sensor device (16) which is independent from the first electronic control system (12). The invention also relates to a device for monitoring a converter (10), to a computer program product, to a machine-readable storage medium, to a drive train of a motor vehicle, and to a corresponding motor vehicle.

There is provided an electrically driven vehicle that well balances calculation volumes and communication volumes of two control devices configured to drive and control motors for driving. The electrically driven vehicle comprises at least one motor for driving and a first control device and a second control device configured to control the motor. The first control device is configured to calculate a target torque that is to be output from the motor, based on information including an accelerator position, to calculate a current command based on the calculated target torque, and to send the calculated current command to the second control device. The second control device is configured to use the current command, a phase current of the motor and a rotational angle of the motor such as to drive the motor by feedback control.

Disclosed are methods and systems for reducing wireless data traffic in a battery management system. A wireless battery management system includes peripheral devices (PDs), each coupled to a battery module having associated battery cells and is operable to receive battery measurements from such associated cells. The system also includes a central device (CD) operable to receive battery measurements from the PDs via a wireless network. The system also includes a first data processing unit (DPU) coupled with a first one of the PDs and communicatively interposed between the first PD and the wireless network. The first DPU is operable to (i) receive a first data packet from the first PD, (ii) if the first data packet passes verification, compress the first data packet and add a protection code to the first data packet, and (iii) send the compressed first data packet with the protection code to a second DPU via the wireless network. The second DPU is coupled with the CD and communicatively interposed between the CD and the wireless network. The second DPU is operable to (i) from the wireless network, receive the compressed first data packet with the protection code, (ii) if the compressed first data packet passes verification, decompress the compressed first data packet to obtain the first data packet, and (iii) send the decompressed first data packet to the CD.

An in-vehicle system is provided with a front J/B and a first voltage detection unit. The front J/B has a main relay unit, a second voltage detection unit, and a second MCU. Based on detection results detected by the first voltage detection unit and a second voltage detection unit when the main relay unit is subjected to on/off operations, the second MCU monitors whether each of the main relay unit, the first voltage detection unit, and the second voltage detection unit has abnormality or not.

A power system for a vehicle includes a control module, a low-voltage battery electrically coupled to the control module, a high-voltage battery electrically coupled to the control module, an engine electrically coupled to the high-voltage battery, and a computer. The computer is programmed to, while the vehicle is in an off state, in response to a pending download to the control module, provide power to the control module with one of the low-voltage battery, the high-voltage battery, or the engine upon determining whether the low-voltage battery and the high-voltage battery have sufficient charge to power the control module for the download.

The present disclosure provides an electric motor control system and a vehicle. The electric motor control system includes a motor drive module, a multi-core processing module, and a safety logic module. The multi-core processing module includes a main function core and a lockstep monitoring core. The main function core is configured to obtain sampling data, and when any one of the sampling data, a running status of the main function core, a motor control signal, and a running status of a motor is abnormal, the lockstep monitoring core outputs a safety trigger signal; and the safety logic module is configured to output an instruction for prohibiting execution of the motor control signal to the motor drive module when receiving the safety trigger signal.

A charging system includes: a main battery storing electric power for a vehicle to travel; an inlet connected to a charging connector; a charging relay that switches a path of electric power from the inlet to the main battery; a converter that steps down a voltage of the electric power from the inlet; and an ECU that controls the charging relay and the converter. The ECU: controls the converter so that the converter starts stepping down the voltage of the electric power from the inlet to the auxiliary voltage after receiving the electric power from the inlet; supplies, before the charging relay switches to the connected state, the charging relay with the electric power from the converter as operating power for switching to the connected state; and controls the charging relay so that the charging relay switches from the disconnected state to the connected state, using the operating power.