When charging piles are used for energy supply, new energy vehicles can be divided into DC fast charge and AC slow charge according to the charging power and charging time, as well as the type of current output from the charging piles. So, do you know what are the differences between these two charging methods?
What's the difference between fast charge and slow charge
Fast charge refers to high power DC charging. It uses the charging interface of the DC charging pile to convert the alternating current of the grid into direct current, which is transmitted to the fast charging port of the electric vehicle, and the electric energy is directly charged into the battery. It can be charged up to 80% in as little as half an hour.
Slow charge refers to AC charging. It is the charging interface of the AC charging pile, which inputs the alternating current of the grid into the slow charging port of the electric vehicle, converts the alternating current into direct current through the charging machine inside the car, and then inputs the battery to complete the charging. The average car takes six to eight hours to recharge its battery.
Te advantages and disadvantages of fast charging and slow charging
Fast charge advantages:
The occupancy time is short, the voltage of DC charging is generally greater than the battery voltage, and the alternating current needs to be converted into direct current through the rectifier device, which puts forward higher requirements for the voltage resistance and safety of the power battery pack.
Fast charge disadvantages:
Fast charging will use large current and power, will have a great impact on the battery pack, charging speed is too fast, resulting in virtual electricity. The fast charge mode is much larger than the slow charge mode, and the high temperature generated will directly lead to accelerated aging inside the battery, greatly shortening the service life of the battery, and in serious cases, it will lead to frequent battery failures.
Slow charge advantages:
The device battery is charged at a lower speed with almost no virtual charge. The charging current of the slow charge is generally less than 10 amps, and the maximum power is 2.2 kilowatts, which is several times less than the 16 kilowatts of the fast charge, which not only reduces the heat and battery pressure, but is more conducive to extending the life of the battery.
Slow charge disadvantages:
The charging time is long, and it often takes several hours to charge the battery pack to full charge.
New energy vehicles need to pay attention to:
1. Charging time
Correct charging time. General battery charging time is about ten hours, try to avoid overcharging. When preparing to travel, it is necessary to arrange charging in advance to avoid insufficient power during driving.
2. Charging frequency
Even if you do not travel much, you should charge your vehicle every day. This makes the battery in a shallow cycle state, and the life of the battery will be extended.
3 .Store
Avoid power loss during storage. When the battery is idle, it should be replenished once a month, which can better maintain the normal state of the battery. Usually do not often use the car, but also start the vehicle.
The two ways of charging new energy vehicles have their own advantages and disadvantages. For pure electric vehicles, battery maintenance costs are relatively high. Therefore, it is recommended that when using the charging mode, try to slow charge as much as possible, and fast charge as a supplement, in order to maximize the battery life.
