ASE XEV Level 1 Safety Training Practice Test

What does the onboard charger do?

Directly powers the propulsion motor Converts DC to AC for home appliances Recharges the traction battery directly from AC without DC conversion Takes incoming AC power and converts it to DC to be used by the traction battery

Correct Answer:

Takes incoming AC power and converts it to DC to be used by the traction battery

Explanation:

The onboard charger’s job is to take AC power from the charging source (like a wall outlet or charging station) and convert it to DC at the proper voltage and current to charge the traction battery. The battery stores DC energy, and later the vehicle’s power electronics handle converting that DC to the AC the motor needs. So the charger does not directly power the propulsion motor, nor does it provide AC for home appliances. It converts incoming AC into DC for the battery to use.

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