Since the charging speed of electric vehicles always depends on the power of the weakest link, there is a trend towards increasingly powerful on board charger. Current research is focused on reducing the size and weight of chargers, emphasizing high energy density, high charging efficiency and good heat dissipation.

Research on the first part of the charger (PFC stage) is progressing well, with a current efficiency of 98%. So the overall efficiency depends mainly on the design and efficiency of the DC-DC converter in the second stage.

In addition, electric vehicles are equipped with their own powertrain, which is also capable of changing the current from AC to DC. But next time in our article on powertrain we describe its functionality and future.

For each vehicle, the most important things are its propulsion and fuel. Electric vehicles are powered by electric current, so most questions are asked about how they are charged. There are many myths and ambiguities in this area, which we will clarify in this article. We will focus on: What are the types of charging stations? What are the differences between them? How fast can electric vehicles be charged?

Current

First, some necessary theory. Electric current can take two forms:

Alternating Current (AC)

Direct Current (DC)

Alternating current (AC) is transmitted through power lines, 230V and 50Hz in standard electrical outlets in most of Europe. current is generated by AC, which can be transmitted without much loss and over longer distances, and then by DC.