Ford Global Technolgoies, LLC

Petros G Taskas

Baoming Ge

Lihua Chen

Fan Xu

Shuitao Yang

Mohammed Khorshed Alam

Yan Zhou

Fan Wang

Shahram Zarei

Systems and methods for operating a vehicle power system are described. The vehicle power system includes an inverter and an electric machine. Switches and a diode are arranged in a way that allows a traction battery to be charged by either a lower voltage charger or a higher voltage charger. Additionally, the switches and diode allow the vehicle power system to heat the traction battery so that the traction battery may operate in a desired temperature range.

Methods and system for charging and heating a traction battery

A system for an electrified vehicle, such as a battery electric vehicle (BEV), includes an inverter configured to drive a motor having motor windings with electrical power from a battery according to a configuration of a power switch of the inverter. The system further includes a capacitor connected between a center-tap of the battery and a neutral-point of the motor winding whereby the capacitor and the motor windings form an LC circuit. The system further includes a controller configured to operate the power switch in a zero-current-switching mode with a switching frequency dependent on a resonant frequency of the LC circuit to thereby cause electrical current to circulate between the battery, the inverter, and the motor which heats the battery and the motor windings.

Vehicular electric drive system including traction battery, inverter, and motor having self-heater arrangement

A vehicular system includes a pump, configured to circulate coolant for a traction inverter, and a controller. The controller may be configured to, responsive to each of a temperature of the traction inverter falling outside a first range or a requested flow rate of the pump falling outside a second range, operate the pump at a predefined speed, otherwise, operate the pump at a speed based on a difference between the temperature and a temperature associated with the coolant.

Vehicular traction inverter temperature control system

A computer includes a processor; and a memory. The memory stores instructions executable by the processor to determine, based on a measurement performed in a vehicle, that a parameter of a power device is outside of a predetermined range; and actuate components in the vehicle to heat the power device.

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Novi, MI, United States of America

Petros G Taskas