With the increase in the number of new energy vehicles, long-life and fast-charge are also issues for new energy vehicles. Of course, long-term and fast-charge have always been hot topics. Life and fast charge are also related to the car experience of new energy vehicles. Should new energy vehicles should pursue long battery life and fast charging?

According to the conservation of energy, the energy density and fast charge performance of the battery can be said to be the two directions of the balance. It is not possible to have both. In terms of fast charge, fast charge is sent to the power battery of the vehicle with high power current. However, if the current is too large, the electrode inside the battery will have certain damage. When the current increases, a layer of the semi-permeable membrane on the surface of the electrode negative electrode will be broken to some extent, so that the electrode material and the electrolyte react with each other to cause oxidation. In order to ensure the safety of the battery, for the power battery, the electrolyte needs to meet the high conductivity, and does not react with the positive and negative electrodes, so it is necessary to improve the battery technology.

Secondly, the use of fast charge is more, the battery damage is more, in addition, in terms of the long battery life, the battery's long battery life, how long is the long battery life? 500 km? 600 km? At present, the long battery life of a car means that the vehicle's power battery load is large enough, although the cruising range is long enough to avoid the so-called "mileage anxiety", but for example, a quick charge of ten or twenty minutes, running 600 kilometers, then The demand for battery rate charging performance will be reduced; at the same time, the power is large, if the battery cost is not low enough.

Therefore, in general, the long-life and fast charging of new energy vehicles should not be pursued for long battery life and fast charging. Standing on the vehicle's cruising range and battery safety, as long as a balance is reached.