What is an onboard charger?

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We mentioned onboard chargers in our previous articles about how they work in EVs charging process. For those who still don't have a clear concept of an onboard charger, you need this article. We will explain what is an onboard charger and the the main function of an onboard charger. 

What is an oboard charger?

Electric car batteries only charge with direct current (DC), but electricity from the grid is always alternating current (AC). An onboard charger is a device that can convert AC power from any AC source into the practical DC form. This conversion process doesn't occur when you plug into a DC charger. 

The onboard charger is located within the electric vehicle itself, as shown below, and its primary job is to manage and control the charging process, ensuring safe and efficient conversion and delivery of direct current to the EV battery.

Role of onboard charger in EV charging

With the increasing demand for faster charging time, onboard chargers are expected to play a more significant role in EV charging. Your electric car's onboard charger can undertake other operations, such as monitoring and managing the charging rate of your EV. It can also control the level of current and voltage at which the battery is charged. There are mainly two types of charging: constant voltage and constant current charging. Some onboard chargers can charge the battery at a constant current or constant voltage or using a combination of both modes. 

These functions are specifically designed for the vehicle's battery and electronic systems, allowing for optimized charging times and reduced energy loss. As a result, EV owners can save time and money on charging fees while also reducing their carbon footprint. This kind of efficient and consistent charging cycle can prolong the lifespan of EV batteries. Onboard charging systems eliminate the need for dedicated charging stations and infrastructure, saving money on construction, maintenance, and management.