Analyze the battery knowledge of lithium batteries for electric vehicles

Teach you the knowledge of lithium batteries, lithium batteries, electric vehicles. You use electric vehicles every day. Know how long the life of lithium batteries in electric vehicles is? Can lithium batteries only be charged and discharged 500 times? I believe most consumers will listen. By the way, the life of a lithium battery is 500, 500 times the number of times, the battery will die, many friends in order to extend the battery life, the battery is completely exhausted every time it is charged, so does the extension affect the battery life really? The answer is no. The life of a lithium battery is 500, which does not refer to the number of recharges, but a cycle of charging and discharging. The charging cycle refers to the battery from full to empty, and then from empty to full, which is different from charging. For example, a lithium battery uses half of its power on the first day and then charges slowly. If this is the case the next day, use half of the battery and charge it twice. This can only be counted as one charging cycle, not twice. Therefore, it may take several charging to complete a cycle. Each charge cycle reduces the battery capacity a bit. However, this is a small amount of power. A high-quality battery can maintain 80% of its original capacity after several cycles. Many lithium-ion power products will continue to be used after two to three years. Of course, the life of the lithium battery needs to be replaced after all. The so-called 500 recharges means that the manufacturer can achieve about 625 recharges at a stable depth of discharge, up to 500 recharge cycles. 500 charging cycles can only be called battery life, because the actual life span, especially the depth of discharge during charging, is unstable. With the announcement of the ban on the sale of fuel vehicles worldwide, the new energy industry has ushered in a wave of development. It is foreseeable that lithium batteries will be widely used in the electric vehicle industry in the future. The lithium batteries of electric vehicles are mainly divided into three categories. The first category is ternary lithium. Now the most used is lithium batteries, the second category is lithium iron phosphate, and the third category is lithium titanate. Lithium titanate runs through the entire Very low, very few people use it. At the top of today’s list, Tianneng Super Power and major manufacturers are basically based on ternary lithium batteries. Among them, Tianneng’s lithium battery is 18650 lithium battery, and the super power is mainly soft package ternary lithium, which belongs to the ternary lithium type. , 3.7v, 4.2v overcharge. Three taboos for lithium batteries! At high temperatures, lithium batteries are afraid of high temperatures. The second largest current, for example, the 18650 battery is 3c discharge, the electric vehicle is 8000w, the battery you use is lower than your discharge current, it will cause the lithium battery temperature to be too high, the current is too large, the day becomes shorter, and it can also be convex. From the outdated state, if your power is very large and very fast, it is claimed that 18650 chooses 10c current battery, so it is obviously very important to choose the appropriate battery! The third full charge, the power is 4.35V, and the ternary lithium battery protection The board is 4.2V rechargeable and available in the market. Many people who buy electric lithium batteries say that they have no rated capacity. In fact, for this reason, generally check the electric lithium battery for a long time, and it is full of less than 50 best TVs, for example , You buy a new cell phone, many people have 50% electricity. If the storage time of the full battery is too long, the capacity of the lithium battery will be reduced. In addition to lithium iron phosphate and lithium titanate, these two can be stored for full charge, but you must also pay attention to choosing a better quality protection board. abolition. Look at the lithium battery. Generally, it can be used for about 400 times a day for lithium batteries and 300 times for lead acid. Relatively stable customized ternary lithium is 500-600 cycles, which is unstable, and has a lot to do with the choice of process batteries for the assembler. The customized lithium iron phosphate is about 1000 cycles. Refuel once a day and use once a day. , Count a cycle, add half, use half, count a cycle. Calculate the life of lithium batteries for electric vehicles yourself: Salt baths extend lifespan A study published yesterday showed that scientists from the Australian Commonwealth Scientific and Industrial Research Organization (CSIRO) found a simpler way to extend rechargeable lithium batteries The organization calls this battery a salt bath. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Will aluminum-air batteries replace lithium batteries in the future?