Analyze the charging principle of the battery

Lithium battery charging principle We have been charging the battery, but do we know how to charge it? Why? To know these can be more in-depth understanding of the battery, let's analyze the charging principle of the battery. When charging a lithium battery, the current requirement is necessary. The battery charging voltage is gradually added following the process. When the voltage is 4.2V, it is initially charged at a constant voltage. The charging current gradually decreases according to the integrity of the battery. When 0.01 degrees Celsius, the charge is over. Now, as for the custom of 0.01 degrees Celsius, 0.01 degrees is more complete. This is the entire process of charging the battery. The nominal voltage of the lithium battery is 3.7v, 3.6v, and the charging cut-off battery is 4.2v, 4.1v. The cut-off voltage plan of the battery of different manufacturers will be different. As for customers, they only need to make adjustments based on product specifications. Lithium batteries are very fragile. They are often overcharged and the battery wears more. There is a protective plate in the lithium battery, but we can't rest assured to use it boldly, because the cut-off parameter of the protective plate is about 4.35v, and the protective plate is just in case, we can't relax. But it should be noted that because the first application of a single battery is in daily contact with some small electronic devices, such as MP3, mobile phones, etc., when applied to industrial batteries, it may be said that this is a business, mobile base stations and other outdoor power sources. Cells, or we commonly call lithium battery packs, lithium battery charging with multiple single cells integrated. The above is a surprise, because it involves the construction of each battery battery pack system, so we will consider the balance of charges, because The voltage path of a single battery in a lithium battery pack is unexpectedly too large compared to other single cells, which will greatly reduce the performance of the entire battery pack. But the principle of charging is actually very different! The working process of our mobile phone charger is generally to detect the battery voltage first. If the voltage is lower than the threshold, the battery will be charged. When the battery is charged to a certain voltage, it will be charged. Convert to full current charging. When the battery voltage reaches the preset voltage, the battery starts to be charged at a constant voltage and the charging current decreases. When the current gradually decreases to a normal value, the charging process ends. 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: Misunderstandings about battery repair