An electrical system can include a rechargeable energy storage system (RESS) and a power inverter connected to the RESS. The power inverter can be configured to provide electrical power to a traction motor. The electrical system includes a plurality of machine windings connected between a plurality of first switches and the traction motor. Each switch of the plurality of first switches is configured to transition between a closed state to allow current flow between the power inverter and the traction motor. The electrical system includes a plurality of inductor windings connected between a plurality of second switches and an off-board power source. Each switch of the plurality of second switches is configured to transition between a closed state to allow current flow between the off-board power source and the power inverter to charge the RESS.

In an embodiment, a power module may include: a plurality of first stages, each having an H-bridge to receive an incoming AC voltage at a first frequency and rectify the incoming AC voltage to a DC voltage; a plurality of DC buses, each to receive the DC voltage from one of the plurality of first stages; a plurality of second stages, each coupled to one of the plurality of DC buses to receive the DC voltage and output a second AC voltage at a second frequency; and a hardware configuration system having fixed components and optional components to provide different configurations for the power module.

A vehicle power supply device converts power from high voltage to low voltage by selectively connecting a predetermined power storage element group to a low voltage electric load from a high voltage power supply formed by connecting power storage elements in series. A leakage current from the high voltage power supply is measured during the dead time period when the power storage element group is not connected to the low voltage electric load. When the value exceeds a predetermined value, the connection between the power storage element group and the low-voltage electric load is interrupted, so that electric shock is prevented.

A dynamically-reconfigurable power converter includes a controller circuit and switching circuitry. The switching circuitry includes a first set of nodes electrically connectable to terminals of an energy storage device, a second set of nodes electrically connectable to at least one winding of a rotational electric machine, and a third set of nodes electrically connectable to an external power source. Electrical measurement circuitry monitors electrical conditions at the first set of nodes and the third set of nodes. The switching circuitry is operative in a first mode to regulate power delivery from the first set of nodes to the second set of nodes, and in a second mode to regulate power delivery between the third set of nodes and the first set of nodes via the second set of nodes.

An apparatus comprises a power electronic energy conversion system comprising a first energy storage device configured to store DC energy and a first voltage converter configured to convert a second voltage from a remote power supply into a first charging voltage configured to charge the first energy storage device. The apparatus also includes a first controller configured to control the first voltage converter to convert the second voltage into the first charging voltage and to provide the first charging voltage to the first energy storage device during a charging mode of operation and communicate with a second controller located remotely from the power electronic energy conversion system to cause a second charging voltage to be provided to the first energy storage device during the charging mode of operation to rapidly charge the first energy storage device.

A high-voltage battery for a motor vehicle, the operating voltage of which is greater than 12 V, in particular, greater than 50 V, having two power connections at a high-voltage network power system of the motor vehicle, which can be connected without voltage through first safety contactors provided inside a housing of the high-voltage battery, and storage cells for electrical energy that are connected to the power connections via the first safety contactors. The high-voltage battery additionally has two charging terminals, which are connected to the storage cells by circumventing the first safety contactors by way of charging lines.

The present disclosure relates to a battery energy processing device and method and a vehicle. The battery energy processing device includes: a bridge arm converter, having a first bus terminal connected with a positive electrode of a battery and a second bus terminal connected with a negative electrode of the battery; a motor winding, having a first end connected with a midpoint of the bridge arm converter; an energy storage device, respectively connected with a second end of the motor winding and the second bus terminal; and a controller, configured to control, in a first preset state, the bridge arm converter to charge and discharge the battery, so as to realize heating of the battery. In this way, the charging and discharging of the battery can be controlled, and internal resistance of the battery causes the battery to generate a large amount of heat, which causes a temperature rise of the battery, thereby realizing the heating of the battery.

In a method for operating an electric vehicle and an electric vehicle, including an electric traction drive device for driving vehicle, a control device for controlling the driving, a first energy storage device, for supplying the control device using a first DC voltage, a second energy storage device, for supplying the traction drive device using a second DC voltage, and an energy supply unit for providing an output DC voltage, the first energy storage device is connected to the second energy storage device via a converter device, the first energy storage device is connected to the energy supply unit, the converter device converts the first DC voltage into the second DC voltage, and a power flow from the second energy storage device to the first energy storage device is prevented.

A charging system for an electric vehicle that receives electric power from external charging equipment to charge a battery includes an inlet including a plurality of ports. The inlet is connectable to the external charging equipment. A charging management part includes a control pilot (CP) terminal for receiving a charging signal indicating information related to a charging power source of the external charging equipment through the inlet. The CP terminal includes a CP plus terminal connected to a CP port among the plurality of ports of the inlet. The CP plus terminal is configured to receive the charging signal. A CP minus terminal is directly connected to a ground port among the plurality of ports of the inlet. The CP minus terminal is configured to receive a ground potential of the external charging equipment.

A vehicle electrical system includes an electrical storage, a first multiphase electrical machine having a plurality of stator windings connected to common neutral point, a first inverter operatively connected to the electrical storage and to the first multiphase electrical machine, wherein the first inverter has a plurality of switch legs with switches, a second multiphase electrical machine having a plurality of stator windings connected to a common neutral point, a second inverter operatively connected to the electrical storage and to the second multiphase electrical machine, wherein the second inverter has a plurality of switch legs with switches, a bidirectional buck-boost DC/DC converter operatively connected to the common neutral point of the first multiphase electrical machine and to the common neutral point of the second multiphase electrical machine and configured for using at least one stator winding of each of the first and second multiphase electrical machines as buck-boost inductance.