A drive unit includes an internal combustion engine (21) disposed in an engine compartment (10), a first electric motor (31) and a second electric motor (33), and an inverter (27) disposed above an electromotive unit (23). The drive unit has: a first harness (41) that connects the inverter and the first electric motor; a second harness (42) that connects the inverter and the second electric motor; a step portion (51) formed so as to be recessed on one side or the other side, in the left-right direction, of the upper end of the inverter; and an AC terminal block (55) disposed in the step portion. The first harness and the second harness respectively extend downward from the DC terminal block while extending outward, and are respectively connected to upper parts of the first electric motor and the second electric motor.

A solar control system includes a solar unit configured to output electric power generated by a solar panel, a battery configured to be supplied with electric power from the solar unit, a first DDC and a second DDC inserted in parallel between the solar unit and the battery and each configured to control electric power, supplied from the solar unit to the battery, based on a command value, a first sensor configured to detect an output current from the first DDC, and a second sensor configured to detect an output current from the second DDC.

Discharge systems for electric vehicles and electric vehicles having discharge systems. In one implementation, a discharge system for an electric vehicle includes a step-down power converter configured to step down an input voltage to an output voltage; discharge circuitry coupled to the output of the step-down power converter, wherein the discharge circuitry is reversibly driveable to load the step-down power converter; an input component configured to receive input that originated from a human user or a sensor of the electric vehicle, wherein the input indicates that the electric vehicle is to shutdown; and discharge drive circuitry configured to drive the discharge circuitry to load the step-down power converter in response to the indication that the electric vehicle is to shutdown.

An electric drive module (EDM) of an electrified vehicle includes a park pawl configured to engage/disengage a park gear of the vehicle in response to actuation by an electric motor, and a power inverter module (PIM) comprising a supercapacitor configured to store electrical energy, and control logic configured to control the park pawl, the electric motor, and the supercapacitor, and an electrified vehicle control unit (EVCU) configured to control operation of the vehicle and in communication with the PIM and an electronic park brake via a controller area network (CAN), wherein the electronic park brake is configured to selectively apply a braking force to a driveline of the vehicle, wherein the system is able to secure the vehicle in the event of a plurality of different electrical system malfunctions without the use of additional electric motors and/or battery systems that increase vehicle weight and packaging.

A power control apparatus includes a case, a cover attached on the case and a gasket which is attached on a wall of the case below the cover. The gasket includes an intermediate pipe and a seal member which seals between the intermediate pipe and the case. The cover includes a water guide portion extending along the wall of the case. The case includes at least two shielding ribs protruding from the case. The shielding ribs are located below the water guide portion. The shielding ribs include portions located above the seal member to overlap the seal member with respect to a vertical direction. The shielding ribs are located between the water guide portion and the seal member with respect to the vertical direction. Each of the shielding ribs includes an inclined portion in which a one-side portion is located lower than the other-side portion.

A motor control system includes a drive unit, a backup control unit, and a power unit. The drive unit is electrically connected to the power unit, and is configured to convert a received low-voltage drive signal into a high-voltage drive signal and output the high-voltage drive signal to the power unit. The power unit outputs, according to the high-voltage drive signal, a power supply drive signal provided by a high-voltage battery. The power supply drive signal is configured to drive a motor connected to the power unit to rotate. The backup control unit is electrically connected to the drive unit. The drive unit is configured to output a diagnosis signal indicating a running status of the drive unit to the backup control unit.

A vehicle control apparatus includes a controller that switches a vehicle between an HEV traveling mode and an EV traveling mode. When the output current of a DC-to-DC converter becomes equal to or higher than a threshold, the controller decreases the output current by decreasing the output voltage of the DC-to-DC converter through output regulation control. The controller makes switching between a normal setting in which the threshold for the output regulation control is set to a reference threshold and a boost setting in which the threshold is set to a boost threshold higher than the reference threshold. The controller prohibits the boost setting when a power margin for boosting becomes equal to or lower than a first power margin value in the HEV traveling mode and when the power margin for the boosting becomes equal to or lower than a second power margin value in the EV traveling mode.

A drive train (1) for a motor vehicle (100) has an electric machine (2) with a rotor (3), a stator (4) and an air gap (5) between the rotor (3) and the stator (4). The drive train (1) also has a transmission (6) and a cooling circuit (7) for conducting a coolant through the electric machine (2) and the transmission (6). The coolant is provided for lubricating and cooling the transmission (6) and for directly cooling electrical conductors of the stator (4). The cooling circuit (7) is provided in such a way that the coolant does not enter the air gap (5).

A system for protecting a vehicle inverter from overvoltage includes a first inverter having switching elements and converting energy from an energy storage device into AC power. A first motor is driven by receiving the converted AC power. A second inverter is connected in parallel with the first inverter, includes a switching elements, and converts energy from the energy storage device into AC power. A second motor is driven by receiving the converted AC power. A first capacitor is connected in parallel between the first inverter and the energy storage device and stores electric energy of the first motor during regenerative braking. A controller turns off a relay connecting the energy storage device and the motor when a voltage of the first capacitor is equal to or greater than a predetermined voltage and operates the switching elements in the inverters in response to first and second current commands.

Technologies for safely lowering a DC link voltage potential include detecting shut down of a system that is powered by the DC link energy storage system and initiating an operating mode to dissipate energy as a form of loss without utilizing an additional resistor, that is, dissipating the DC link internally to the enclosed power module.