Forced charging method for PHEV vehicles using motor and HSG

A non-transitory computer readable medium containing program instructions executed by a processor for forcibly charging a high-voltage battery using a motor and a Hybrid Starter Generator (HSG), the computer readable medium comprising:

• program instructions that control a sensor to sense speeds and temperatures of the motor and the HSG;
• program instructions that calculate maximum chargeable power using three dimensional (3D) maximum charging power maps based on speeds, and torque (power), and torque applying times of the motor and the HSG;
• program instructions that forcibly charge the high-voltage battery with the maximum chargeable power;
• program instructions that adjust maximum charging power using energy integration during the forced charging;
• program instructions that execute a first excessive temperature prevention logic for the motor and the HSG to continuously perform forced charging by one of the motor and the HSG, during the forced charging of the high-voltage battery using the motor and the HSG simultaneously;
• and
• program instructions that execute a second excessive temperature prevention logic for adjusting current temperatures of the motor and the HSG below an operating power limiting temperature to maximize a time of an Electric Vehicle (EV) driving mode in which a vehicle is driven through motor-only operation, in response to the forced charging of the high voltage battery being completed.

A system for forcibly charging a high-voltage battery using a motor and a hybrid starter generator (HSG), comprising:

• a memory configured to store program instructions;
• and
• a controller configured to execute the program instructions, the program instructions when executed configured to:
• operate sensor to sense speeds and temperatures of the motor and the HSG;
• calculate maximum chargeable power using three dimensional (3D) maximum charging power maps based on speeds, and torque (power), and torque applying times of the motor and the HSG;
• forcibly charge the high-voltage battery with the maximum chargeable power;
• adjust maximum charging power using energy integration during the forced charging;
• execute a first excessive temperature prevention logic for the motor and the HSG to continuously perform the forced charging by one of the motor and the HSG, during the forced charging of the high-voltage battery using the motor and the HSG simultaneously;
• and
• execute a second excessive temperature prevention logic for adjusting current temperatures of the motor and the HSG below an operating power limiting temperature to maximize a time of an Electric Vehicle (EV) driving mode in which a vehicle is driven through motor-only operation, in response to the forced charging of the high voltage battery being completed.