Correct charging time method for lithium-ion battery electric vehicles
Lithium-ion batteries are widely used in electric vehicles. The first charge of a lithium-ion battery, the charging time and method, will be explained in detail below by xiaobianyujiangping of the global power grid.
● Correct use of lithium-ion electric vehicle batteries
The correct use of lithium-ion batteries can be summarized into the following three points, which the Global Electric Vehicle Network editor has summarized as follows:
1. Charge according to standard time and procedure, even for the first three times; (Power Electronics Tip: In particular, do not charge for more than 12 hours.)
2. When the lithium-ion battery's charge is too low during electric vehicle operation, it should be charged as soon as possible. (Power Electronics Tip: Fast charging stations are not recommended as they can severely damage the battery. The practice of using the battery completely before recharging, or charging it for an extended period, is not always the best approach. It depends on the battery type. The goal is to utilize the battery's power as much as possible during operation, ideally for nickel-cadmium batteries, to prevent the memory effect.)
3. Lithium-ion battery electric vehicles do not require special activation methods; the lithium-ion battery will be naturally activated while the electric vehicle is in motion. Attempting to activate it by deliberately charging it for the first three 12-hour periods will be futile.
●Incorrect use of lithium-ion electric vehicle batteries
Pursuing 12-hour ultra-long charging times and using lithium-ion batteries that automatically deplete their power are mistakes. If you are making these mistakes, please correct them immediately.
● Routine maintenance and storage of lithium-ion batteries
Lithium primary batteries have very low self-discharge and can generally be stored for 3 years, with even better results under refrigeration. Low-temperature storage of lithium-ion batteries is an excellent method.
Lithium-ion batteries can be stored at 20℃ for more than six months due to their low self-discharge rate, allowing most of their capacity to be recovered. However, the self-discharge phenomenon in lithium-ion batteries means that if the battery voltage remains below 3.6V for an extended period, it can lead to over-discharge, damaging the internal structure and reducing battery life. Therefore, lithium-ion batteries stored for extended periods should be recharged every 3-6 months, ideally at a voltage of 3.8-3.9V (the optimal storage voltage for lithium-ion batteries is approximately 3.85V), and should not be fully charged. Lithium-ion batteries have a wide operating temperature range; they can still be used outdoors in northern winters, although their capacity will be significantly reduced. Upon returning to room temperature, the capacity can recover, but this is affected by temperature. Unlike lithium-ion batteries, primary lithium-ion batteries cannot be recharged; recharging them is extremely dangerous. Other considerations are similar to those for lithium-ion batteries.
