What are the matters needing attention in the use of lithium ion batteries
1. Lithium-ion batteries are afraid of cold and heat, do not use them in extreme environments
Many people like to put lithium-ion battery electric cars in the sun in summer, or park in the yard or on the road in winter. This is very unfavorable regarding the service life of lithium-ion batteries. Lithium ions are in the electrolyte and electrode sheets. The migration rate is closely related to temperature. Theoretically, the temperature can be used normally between -20℃-55℃. In daily life, the use temperature of lithium-ion battery between 5℃-35℃ will not harm the lithium-ion battery. Users in the north should take the lithium-ion batteries home in winter as much as possible, and do not put them outdoors. Users in the south should prevent exposure in summer.
Many people think that the number of cycles of charging a lithium-ion battery hundreds of times in the manual of an electric vehicle is just one plug and unplug, which is a misunderstanding. The manual actually refers to the number of complete re-discharges. Li-ion batteries are different from nickel-cadmium. Batteries, lithium-ion batteries do not have any memory effect, and can be charged anytime and anywhere. Charging the battery with residual power will not shorten the service life, but can also maintain the battery and extend its cycle life. Regarding lithium-ion batteries, the correct method is slow charging instead of deep charging.
3. Charge with a suitable charger to prevent high current
The chemical activity of lithium-ion batteries is much more active than that of lead-acid batteries, and the requirements for chargers are higher. Once a brand-name charger or unsuitable fast charger is used, it will not only affect the service life of the lithium-ion battery itself, but also seriously an explosion occurred due to the breakage of the diaphragm due to overheating.
4. Do not overcharge, do not activate the lithium-ion battery
After buying lithium-ion batteries for electric vehicles, many users still follow the lead-acid battery method, charging the lithium-ion batteries for 10-12 hours the first three times, thinking that the lithium-ion batteries need to be activated. In fact, this affects the lithium-ion batteries. Life-span, even more weird people think that superstitious trickle charging is to continue charging the electric car for 1 hour after it is fully charged to offset the interference of internal resistance. These practices are wrong. The correct way is to fully charge it. Just unplug the power directly. Try not to charge lithium-ion batteries for electric vehicles overnight, as they are prone to fire.
5. Do not store at full power
When electric vehicle lithium-ion batteries (18650 batteries) are purchased, they are usually 2-3 cells. There are very few fully-charged ones. The full-charged storage time is long, which will reduce the capacity of the lithium-ion battery. In addition, it should be noted that choosing a better quality protection board. Pay attention to these points, your electric car lithium-ion battery is no problem for five or six years.