Briefly analyze the charging and discharging principle of lithium batteries

A brief analysis of the charging and discharging principle of lithium batteries and the increasing application of lithium batteries. At present, mobile phones, computers, electric vehicles and other tools are inseparable from lithium batteries. If the movie Tesla energy wall is the future, lithium batteries will Become the core of modern family life. Currently, lithium batteries cover a variety of technologies, but the differences are also great. What is usually called a lithium battery is actually a lithium battery, which relies on the insertion and swimming of lithium ions between the positive and negative poles to realize the mutual conversion of chemical energy and electrical energy. According to the different anode materials, lithium batteries can have many kinds. The current mainstream anode is an important use: the battery is lithium cobalt oxide, lithium manganese oxide and ternary materials, and the anode uses graphite. When charging, after the anode lithium ions swim to the anode, the electrolyte is embedded in the inner layer of graphite. When discharging, the lithium ions swim from the cathode graphite lining through the electrolyte to the anode material. The greater the storage capacity of lithium ion positive and negative materials. The greater the potential difference between lithium and lithium intercalation, the higher the energy density of the battery. Therefore, when testing the battery, the internal resistance of the battery is as small as possible. Therefore, the lithium battery, lithium, and lithium are better embedded, and the battery is charged and discharged more fully. This is what we usually say, the battery has good durability and good quality. Great. The difference between lithium batteries and lead-acid batteries is known from the market. At present, where electric vehicles are sold, whether it is battery brand, design or brand, it is that lead-acid batteries are lithium iron phosphate batteries, so which lithium battery and lead-acid battery What is the difference? The following is the difference between Lithium battery and lead-acid battery summarized by Carolita Battery for consumers' reference. The details are as follows: Mass and volume Normally, the weight of a lead-acid battery is between 16 and 30 kg, which is relatively large. Lithium batteries generally weigh 2.5-3.0 kg and are relatively small in size, so they are light and easy to carry. From a quality point of view, it is difficult to judge the pros and cons of the two, but consumers can purchase high-quality batteries processed by regular manufacturers according to their actual needs. Battery capacity Lithium batteries generally have a capacity of 8-10 amps. The capacity of a lead-acid battery is about 20 amps. Kilometer travel For example, using the same 48V battery, both lithium-ion and lead-acid electric vehicles can travel 30-40 kilometers when fully charged, depending on the size of the motor used. Durability Lithium batteries are durable, slow power consumption, charge and discharge more than 500 times, no memory, and generally have a service life of 4-5 years. Lead-acid batteries generally have a depth of 400 times that of deep charge and deep discharge, which is less than memory, and their lifespan is about 2 years. If you use a maintenance-free lead-acid battery, it should be noted that the battery loses less water, and generally do not add distilled water when using it. In terms of durability, lithium batteries have good impact resistance. A fully charged battery is safely secured. It vibrates for 1 hour with an amplitude of 4mm and a frequency of 16.7hz. Overcharge resistance, 25℃, fully charged battery with 0.1ca charge for 48 hours, no leakage, no swelling or breakage of the battery, normal open circuit voltage, capacity retention rate above 95%; high current resistance, full charge 2CA discharge for 5 minutes or 10CA discharge for 5 Seconds, the non-conductive part is fused and the appearance is not deformed. Price and warranty period At present, the mainstream battery on the market is 48v. If it needs to be replaced, the lead-acid battery is about 450 and the warranty period is 1 year; the lithium battery is more expensive, about 1,000 yuan, but the warranty period is two years. Environmental protection In 2012, the state announced the access conditions for the lead-acid industry. Since then, the lead-acid industry has been integrated. Most manufacturers use the internalization of cadmium and arsenic for free green processing, which is more energy-efficient and environmentally friendly. In the process, if the method is not appropriate, it may cause pollution; lithium batteries are relatively environmentally friendly in terms of processing and recycling. 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: Polymer lithium battery or 18650 battery, which is better