What is the charging principle of pure electric vehicles?
A pure electric vehicle is a kind of vehicle that uses a single battery as the energy storage power source. It utilizes the battery as the energy storage power source, and provides electric energy to the electric motor through the battery to drive the electric motor, thus driving the vehicle. Pure electric vehicles with large battery capacity can generally be fast-charged or slow-charged.
What is the difference between fast and slow charging?
We all know that the electricity in the power grid is alternating current (AC), while the electricity in the power battery is direct current (DC) charging, which is simply the process of converting the AC electricity in the power grid into DC electricity for charging into the power battery of a new energy vehicle.
“Slow charging” refers to AC slow charging, as the name suggests, using an AC charging pile, installed outside the electric vehicle, connected to the AC power grid, the use of the process, the AC power grid into the slow charging port of the electric vehicle. The AC charging pile only provides power output, not directly charging the battery of the electric car, it needs to be connected to the car charging machine inside the car, through the car charging machine to convert the AC power into DC power, and then input the battery to complete the charging. It takes 6 to 8 hours for a typical model to fully charge the battery.
“Fast charging”, refers to DC fast charging, generally refers to high-power DC charging, with DC charging piles, DC charging piles are installed outside the electric vehicle, also connected to the AC power grid, but different from slow charging is that it first converts the AC power from the power grid into DC power right inside the pile, and then conveys the DC power to the fast-charging port of the electric vehicle, and the power goes directly The power goes directly to the vehicle’s power battery, which can be charged to 80% in one hour or even faster.
Is it true that fast charging hurts the battery?
The degree of damage to the battery depends on the frequency of use, the so-called “fast charging will hurt the battery” is not accurate, it should be accurate to say that frequent fast charging compared to slow charging, will cause damage to the battery.
Slow charging although charging speed is slow, spend a long time, but can reduce the virtual power, prolong the battery life. While fast charging charging time is fast and takes a short time, but it is easy to produce virtual electricity, affecting the battery life.
Therefore, if in the case of convenient charging conditions, it is recommended to try to AC slow charging as the main, DC fast charging as a supplement to the charging method, reasonable use can be.