Cycle life of lithium battery in electric vehicle and its correct usage

How long will the lithium battery last in electric cars? Believe that the vast majority of consumers have heard of, the life of the lithium battery is "500", 500 times more than the number of times, the battery will "die", many friends in order to be able to extend battery life, each time to charge when the battery run out completely, so really have a longer effect on battery life? The answer is no. Lithium battery life is "500 times", refers to the number of times, but a charge and discharge cycle.

A charging cycle means that all the battery's energy is used from full to empty, and then from empty to full, which is not the same as charging once. A lithium battery, for example, USES half its energy on the first day, and then charges it slowly. If this is still the case the next day, you can use half of the charge, and the total two charges down, this can only count as one charging cycle, rather than two. As a result, it usually takes several charges to complete a cycle. The battery capacity decreases a little with each charging cycle. However, this is a very small amount of power. After many cycles of charging, high-quality batteries still retain 80% of their original capacity, and many lithium-powered products are still in use after two or three years. Of course, lithium battery life will eventually need to be replaced.

The so-called 500 times, refers to the manufacturer in a constant discharge depth of 625 times or so can be charged times, reached 500 charging cycle.

Due to various influences in real life, especially the discharge depth during charging is not constant, so "500 charging cycles" can only be used as a reference battery life.

We often have the mistake of "recharging after the lithium battery runs out of power" or "keep charging after the lithium battery is full, be sure to charge it for 12 hours". Little do you know, if you so make lithium battery overcharge or over discharge, not only cannot make the lithium battery life of electric vehicles longer, but will shorten. So how to correctly use lithium battery, small make up for you to introduce some of the correct use of lithium battery, to help you extend the life of lithium battery electric vehicle.

Introduction to the correct use of lithium battery in electric vehicle:

Recharge your batteries every day

Even though your electric car's lithium battery can last two to three days on a single charge, it is recommended that you charge it every day. Since the lithium battery after use is in a shallow cycle state, charging every day will prolong the life of the lithium battery of electric vehicles.

2. Timely charging

Because lithium batteries in the discharge, will enter the vulcanization process, if timely charging, you can remove the serious vulcanization. Therefore, lithium battery should be charged as soon as possible after the use of the battery, as far as possible to make the battery power in a full state.

3. Regular deep discharge

A regular deep discharge of the battery also helps "activate" the battery, slightly increasing its capacity. The usual method is to discharge the battery completely at regular intervals.

The method of full discharge is to cycle to the first under voltage protection under normal load conditions on a flat road surface.

After the battery is under voltage protection for the first time, after a period of time, the battery will return to the state of non-under voltage when the battery is fully charged, which will improve the capacity of the battery.

It should be noted that the lithium battery in the first under voltage protection, remember not to use the battery, at this time the damage to the lithium battery is very big.

4. Try to use the original charger

Generally, charger of each manufacturer has personalized demand generally, do not change charger at will when in doubt. In addition, do not remove the speed limit of the controller, remove the speed limit of the controller, although it can improve the speed of some cars, but it will reduce the service life of the battery.

In fact, the correct use of lithium batteries in electric vehicles, but also with a lot of small make up will not be tired of this one. When you buy an electric car, there are generally instructions. In order to your electric car lithium battery can live a long time, small make up in remind you of a sentence, must be in accordance with the correct use of electric car lithium battery method to implement, must not give lithium battery overcharge or over discharge.