Systems and methods for monitoring voltage of vehicle onboard battery charger

An apparatus for detecting a fault in a battery charger circuit, comprising:

• a memory;
• and
• a processor configured to execute instructions stored on the memory to:
• determine, based on at least one expected voltage value of an incoming alternating current source, a first threshold;
• measure at least one line voltage value associated with the incoming alternating current source that provides power to the battery charger circuit;
• determine whether the measured at least one line voltage value is greater than the first threshold;
• and
• in response to a determination that the measured at least one line voltage value is greater than the first threshold, preventing the battery charger circuit from connecting to the incoming alternating current source after a first predetermined period.

A non-transitory computer-readable storage medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:

• determining, based on at least one expected voltage value of an incoming alternating current source that provides power to a battery charger circuit of a vehicle, a first threshold and a second threshold;
• measuring at least one line voltage value associated with the incoming alternating current source;
• determining whether the measured at least one line voltage value is greater than the first threshold;
• in response to a determination that the measured at least one line voltage value is greater than the first threshold, disconnecting the battery charger circuit from the incoming alternating current source after a first predetermined period;
• in response to a determination that the measured at least one line voltage value is not greater than the first threshold a value, determining whether the measured at least one line voltage value is greater than the second threshold;
• and
• in response to a determination that the measured at least one voltage value is greater than the second threshold, disconnect the battery charger circuit from the incoming alternating current source after a second predetermined period.