Will the frequent use of fast charging in electric vehicles shorten the battery life?

The reason why consumers buy electric vehicles is mostly because they have rigid car needs and are limited to local license plate policies. However, the actual experience after purchase is relatively ordinary, especially for users who do not have charging piles around their residences. It can be said that the charging is very good. pain. The limited cruising range and long charging time seem to have brought new energy into a trough. How can we deal with these problems? Add new battery packs to the range of electric vehicles; or improve battery technology and increase battery capacity; or increase the charging efficiency of electric vehicles and shorten the charging time. Among them, shortening the charging time is currently a relatively easy technology to achieve. The charging piles currently built support 2 modes of charging: slow charging and fast charging! This is like charging our mobile phone. There are two modes: fast charging and slow charging. In the fast charging mode, the battery can be charged quickly, at least nearly 40% faster than slow charging. The car charging here is also a similar concept, but the efficiency is much higher than that of mobile phones. However, what I want riders to know is that fast charging and slow charging are two concepts. Slow charge is alternating current charging, and the time for overflow is generally 6-8 hours. In this charging mode, the battery suffers the least damage. Fast charging is an emergency charging method, which uses high-power DC charging (also AC fast charging). The voltage of this DC charging is generally greater than the battery voltage. The AC power is converted to DC power through a rectifier device, which is effective for power lithium The pressure resistance and protection of the ion battery pack put forward higher requirements, and the charging current is large, which is ten times or even dozens of times the conventional charging current. A large number of electrons flow from the positive electrode to the negative electrode at a very high speed. The charging time of fast charging is generally 80% of the electricity in 30 minutes. Some car companies have broken through the technology and can charge 80% of the electricity in 5 minutes! This kind of charging efficiency is indeed scary, but the problem is also coming. Will such a fast charging affect the car battery? After all, the battery of an electric car is equivalent to the three major parts of an ordinary car. Theoretically, it will affect the battery. After all, fast charging will reduce the cycle life of the battery, because the battery is converted into electrical energy through chemical energy, and the charging is a reverse chemical reaction. Often fast charging will reduce the battery’s reducing ability and reduce the battery’s charging. Cycles. In order to alleviate the negative uses brought about by fast charging, a very important component in electric vehicles is the BMS power management system. Regarding electric vehicles, BMS is the core component of fast charging. The important purpose of BMS is to intelligently manage and maintain each battery unit, guard against overcharge and overdischarge of the battery, prolong the service life of the battery, and monitor the status of the battery. For example, when you fast charge a new energy vehicle, the BMS can control the input current and voltage to reduce the damage to the battery by the fast charge as low as possible. Therefore, these damages can be ignored in a limited time. The BMS can be seen Regarding the importance of the battery system. In addition, the batteries are in groups. During fast charging, some battery packs may not be fully charged when protected. Long-term fast charging will cause the performance of these battery packs to decrease. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What are the risks of fast charging of lithium batteries?