How long is the life of an electric vehicle lithium-ion battery?

A charging cycle means that all the power of the battery is used from full to empty, and then from empty to full. This is not the same as charging once. For example, a lithium battery used only half of its power on the first day, and then recharged it. If it is still the case the next day, that is, use half of the charge and charge it twice in total. This can only be counted as one charging cycle, not two. Therefore, it may usually take several times to complete a cycle. Every time a charging cycle is completed, the battery capacity will decrease a bit. However, this amount of power is very small. High-quality batteries will still retain 80% of the original capacity after being charged for many cycles. Many lithium-powered products are still used as usual after two or three years. Of course, the lithium battery needs to be replaced after the end of its life. The so-called 500 times means that the manufacturer has achieved about 625 charging times at a constant depth of discharge, reaching 500 charging cycles. Due to various influences in real life, especially the depth of discharge during charging is not constant, 500 charging cycles can only be used as a reference battery life. Electric vehicle lithium-ion battery life: The life of lithium-ion batteries At this stage, the batteries in electric vehicles that various manufacturers try to develop are basically batteries (mainly lithium-ion batteries) and fuel power batteries. Fuel power batteries are due to excessive Ru0026D costs and maintenance costs. High (the maintenance cost of fuel power batteries is about three to four times that of batteries), which is not suitable for the current development of electric vehicles. So I won't mention it for the time being, just talk about the lithium-ion batteries that are now commonly used. The service life of lithium-ion batteries on ordinary electronic products is about 5 to 20 years, with an average of 8 years. At the current level of technology, the service life of lithium-ion batteries in electric vehicles is only about 3-5 years. When the battery capacity on an electric vehicle decays below 80% of the initial capacity, the driving range of the electric vehicle will be significantly reduced. When the battery capacity decays below 70%, the battery must be replaced. For many current pure electric vehicles, the cost of the battery accounts for about 40% of the total cost of the car. In other words, replacing the battery is equivalent to replacing a small car. If the electric car charger is normal, and the electric bicycle driving less than 10km per day, the brand-name new battery can be appropriately supplemented with deionized water when the warranty period expires. For an electric car driving 50km a day, check the battery condition after 8 months, and add deionized water appropriately, add 3~4ml per cell, especially in summer, remember to cover it after adding water Safety valve. For electric cars that are often used by people, it is recommended that they should be inspected for about half a year and maintained according to their usage. Many users of electric vehicles have found that the positive battery is prone to fall behind. Because the distributed capacitance between each battery cell and the car body is different, the positive battery is the most damaged. While adding water, swap the positions of the middle battery and the side, so that the positive battery takes turns to sit in the bank. When the battery level is above 80%, you don’t need to charge it. If there is a chance to charge between 30% and 80%, it must be charged if it is less than 30%. When accelerating, it should be gentle and not overloaded. If you have a pedal device, try to assist you when you start or go uphill. The battery in the battery box should be tightly sealed with paper, and the bottom should be glued with double-sided foam tape if possible to prevent battery vibration. Perform a complete discharge once a month, and then continue to charge for 12 hours. When replacing the battery, you should always check the parameters of the charger to keep the battery and the charger matching. Once it is found that it is difficult for the charger to turn to the green light or turn to the green light as soon as it is charged, and the battery temperature rises abnormally during charging, check whether it is a charger or battery problem immediately. For ordinary chargers without temperature compensation, a 6A10 diode is connected in series between the charger and the battery in summer, and two 6A10 diodes are connected in series with the gel battery; in other seasons, short the diode. Keep the vehicle's mechanical and technical conditions in good condition, with sufficient tire pressure, good lubrication, and normal brake clearance and tightness. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Why is the lithium-ion battery of electric vehicles not replaced by graphene batteries?