What is the life and correct use method of electric vehicle iron lithium battery?

Lithium battery life of electric car

I believe that most consumers have heard that the life span of lithium batteries is "500 times" and 500 times of charge and discharge. After this number, the battery is "dead". Many friends are able to extend the life of the battery every time. When the battery is completely exhausted, it will be charged. Does this really extend the battery's life? The answer is no. The life of a lithium battery is "500 times", not the number of charges, but a cycle of charging and discharging.

A charging cycle means that all the power of the battery is used from full to empty, and then filled from empty to full. This is not the same as a charge. For example, a lithium battery uses only half the electricity on the first day and then charges it slowly. If the next day is the same, that is, half of the charge, a total of two charges down, this can only count as one charging cycle, not two. Therefore, it may usually take several charges to complete a cycle. Each time a cycle is completed, the battery capacity is reduced a little. However, this less power is very small, and high-quality batteries will still retain 80 % of their original capacity after multiple cycles. Many lithium power supply products are still in use after two or three years. Of course, lithium power life after the end is still need to be replaced.

The so-called 500 times means that the manufacturer has achieved about 625 refillable times at a constant discharge depth, reaching 500 charging cycles.

Due to the various effects of actual life, especially the discharge depth when charging, the "500 charging cycle" can only be used as a reference battery life.

Proper Use of lithium battery in Electric Vehicles

1, charge every day

Even if your lithium-ion battery can be charged for two to three days at a time, it is recommended that you charge it every day. Because the lithium battery after use is in a shallow cycle, charging every day will increase the life of the lithium battery of the electric car.

2, timely charging

Because the lithium battery will enter the vulcanization process after discharge, if it is charged in time, it can remove the non-serious vulcanization. Therefore, after the lithium battery is used, it must be charged as soon as possible, so that the battery power is full as far as possible.

3, regular deep discharge

A periodic deep discharge of the battery also facilitates the "activation" of the battery, which can slightly increase the battery capacity. The general method is to perform a complete discharge of the battery at regular intervals.

The method of complete discharge is to cycle to the first under pressure protection under normal load on a flat road surface.

After the battery is under pressure protection for the first time, after the battery has passed through a period of time, the voltage returns to the non-voltage state. At this time, the battery is fully charged and the battery capacity will be increased.

It should be noted that when the lithium battery is under pressure for the first time, remember not to use the battery. At this time, the damage to the lithium battery is very large.

4, use the original charger as much as possible

In general, each manufacturer's charger generally has a personalized demand, in the uncertain time do not change the charger at will. In addition, do not remove the speed limit of the controller. After removing the speed limit of the controller, although it can increase the speed of some cars, it will reduce the service life of the battery.

In fact, the correct use of lithium-ion batteries in electric vehicles, and a lot of, small editors do not repeat here. When you buy an electric car, there are general instructions for using it. For your lithium-ion battery can live long, small in remind you, must follow the correct use of lithium-ion battery electric vehicle to carry out, do not overcharge or excessive discharge lithium-ion battery.

The page contains the contents of the machine translation.