First of all, it should be clear that the service life of power batteries for new energy vehicles is usually not measured in terms of time, but in terms of the number of cycles of use. Cycling means that the battery will go through different charging and discharging processes,Battery recycling so there will be a starting charging point and a power point at which charging is terminated. If we carry out deep charging and discharging, i.e. cycling from 0% to 100%, we can get a set of experimental data. Generally speaking, lithium iron phosphate batteries can be recycled about 2,000 times or so, while the current lithium ternary batteries can generally be recycled about 1,400 times or so.

In addition, the cycle life of the battery is also directly related to the temperature at which the battery works. The figure below shows the change in battery discharge capacity of a Tesla battery at different temperatures.cylindrical cell assembly machine As can be seen from the graph, when the battery is working at 35 degrees, its cycle life is significantly higher than that of 55 degrees.

Also, different cycle charging methods and discharge depths can have a significant impact on the cycle life of the battery. The graph below shows the curve of the Tesla battery system's impact on battery life at different discharge depths.battery making machine We can observe that the battery life can reach more than 3,000 cycles in the 0%-50% cycle mode, while less than 900 cycles are required for the battery life to decay to less than 50% under deep cycling.

It is important to note that according to national laws, when the battery capacity decays to less than 80%, it must be mandatorily recycled and subjected to gradient reuse.

In addition, in the case of deep charging and discharging, the vehicle's range will also be a little longer, but the battery's decay rate will also be faster. At the same time, daily car habits also have a great impact on the service life of the power battery.

Here are some suggestions:

1. Don't always perform fast charging, combine fast and slow charging;

2. Avoid discharging the power battery with high current frequently, such as rapid acceleration and braking;

3. when not in use for a long period of time, regular charging is also required to avoid deep feedthroughs;

4. avoid charging and discharging in extremely cold weather;

5. Regular physical examination of the power battery, usually once a year, can be carried out at a regular 4S store.

By avoiding deep charging and discharging, paying attention to power battery maintenance and charging as you go, you can maximize the service life of the power battery.