An electric vehicle includes a controller configured to receive sensor feedback from a high voltage storage device and from a low voltage storage device, compare the sensor feedback to operating limits of the respective high and low voltage storage device, determine, based on the comparison a total charging current to the high voltage storage device and to the low voltage storage device and a power split factor of the total charging current to the high voltage device and to the low voltage device, and regulate the total power to the low voltage storage device and the high voltage storage device based on the determination.

An onboard battery charging system including battery system and battery controller protection mechanisms and providing battery charge optimization where the protection portions of the system use an input isolation mechanism to isolate the vehicle power input from the battery controller upon detection of deviant charge voltages and a battery isolation mechanism to isolate the battery controller from the batteries upon detection of cyberattacks resulting in deviant charge power being provided to the batteries and where the charge optimization portions of the system use the same input isolation mechanisms as are employed for the vehicle system protection input isolation to regulate the timing of vehicle charging as a function of electricity prices.

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.

A power system for a vehicle includes: a high voltage battery; a low voltage DC-DC converter configured to step down a voltage of the high voltage battery and to output the stepped down voltage; a low voltage battery charged by an output current of the low voltage DC-DC converter, where the low voltage battery includes a first cell group including a plurality of battery cells, and a second cell group connected in parallel with the first cell group and including a plurality of battery cells; and a plurality of switches configured to electrically connect or disconnect the first cell group or the second cell group with the low voltage DC-DC converter, electrical loads configured to receive power from at least one of the low voltage DC-DC converter and the low voltage battery; and a controller configured to control opening or closing of the plurality of switches.

A controller of a drive system is configured to, when a power switch is changed from an on state to an off state in a situation in which it has been diagnosed that an abnormality is occurring in a motor generator, execute a starting check process of checking a drive circuit and an engine starting process of starting an engine. The starting check process includes a voltage reduction process of driving a DC-DC converter until a capacitor voltage becomes lower than or equal to a prescribed voltage. The controller is configured to, on condition that the controller determines through a voltage reduction determination process that the capacitor voltage is reduced as compared to the capacitor voltage at an end of the voltage reduction process, execute the engine starting process.

A control system for a wireless power transfer (WPT) system includes current sampling modules, voltage sampling modules, a logic conversion circuit, and a controller area network (CAN) communication module that are all connected to a microprocessor module; the current sampling module is connected to the logic conversion circuit through a signal isolation circuit, the logic conversion circuit is connected to a pulse-width modulation (PWM) module, the PWM module is connected to an inverter circuit or a DC/DC converter, and the current sampling module and the voltage sampling module are connected to a primary side or a secondary side of the WPT system; transmitter coils on the primary side are spaced apart on the road, a receiver coil on the secondary side is disposed on a chassis of an electric vehicle, and the transmitter coil includes a double rectangular coil, a ferrite core surface, and a shielding aluminum plate.

A solar control device controls a solar power generation system having at least one first group including a solar panel and a first DC/DC converter and at least one second group including a second DC/DC converter and a battery. The solar control device includes an electronic control unit that sets an output command value for the second DC/DC converter such that the output command value periodically switches between a first value and a second value that is smaller than the first value, when an output of the second DC/DC converter is equal to or smaller than a threshold value, and determines that the second DC/DC converter is abnormal when the output command value and the output of the second DC/DC converter satisfy a predetermined condition.

A power supply system connected to a motor unit of an electric vehicle, the power supply system includes: a fuel cell; a secondary battery; a voltage control unit; and a switch. The fuel cell is directly connected to the motor unit, the secondary battery is connected to the motor unit via the voltage control unit, and the switch is configured to switch between a first state in which the secondary battery and the voltage control unit are connected in parallel with the fuel cell and a second state in which the secondary battery and the voltage control unit are connected in series with the fuel cell.

A charging system includes a scalable power source for powering a motor of a vehicle and telematics and battery management modules. The scalable power source includes: N battery packs, where N is an integer greater than or equal to 3; and multiple switches connected to the N battery packs including N−1 switches for serially connecting the N battery packs between supply and return lines and a multiple of N switches for parallel connecting the N battery packs to the supply and return lines. The telematics module requests capability of a charging station and receives a response signal from a device indicating the capability of the charging station. The battery management module: based on the capability of the charging station, selects one of the available arrangements in which to connect the N battery packs, sets states of the multiple switches; and then charges the N battery packs based on the states.

An abnormality diagnosis system performs an abnormality diagnosis of a plurality of motor systems that include a motor for moving a moving body. The abnormality diagnosis system identifies a comparison target system that is the motor system, among the motor systems, that is a comparison target in relation to a diagnosis target system that is the motor system to be a target of the abnormality diagnosis. The abnormality diagnosis system acquires a state-related value that is a value related to an operation state of the motor from each of the diagnosis target system and the comparison target system. The abnormality diagnosis system performs a comparison of the state-related value that is acquired from the diagnosis target system and the state-related value that is acquired from the comparison target system, and diagnoses a presence or absence of an abnormality in the diagnosis target system using a result of the comparison.