How to improve the charging speed of lithium batteries

There are many ways to charge lithium batteries. Commonly used charging methods include constant current charging method, constant voltage charging method, constant current and constant voltage charging method, variable current charging method, pulse charging method, intermittent charging method, etc. (1) The performance of the lithium battery is affected by the battery temperature. Too low temperature will affect the activity of the internal material of the battery, and too high will destroy the structure of the internal material. Generally, the allowable range is between -20°C and +65°C. When designing, generally choose between 0℃ and +60℃. (2) In the main charging stage of the variable-current intermittent charging method, under the condition of limited charging voltage, the intermittent method of gradually decreasing current is adopted to increase the charging current, which speeds up the charging process and shortens the charging time. But this kind of charging mode circuit is more complicated and costly. Generally, it is only considered for high-power fast charging. (3) Smart charging is currently a more advanced charging method. It judges the battery charging status by checking the increase of battery voltage and current, and dynamically tracks the acceptable charging current of the battery, so that the charging current is always at the maximum acceptable to the battery. Near the charging curve. The current use of graphene in batteries is to combine with silicon in the negative electrode of the battery to replace the original graphite, which can increase the overall capacity and charging speed of the battery, but the performance improvement effect is limited. The lithium battery must be charged in chronological order. The charging current and charging voltage are controlled so that excessive charging is not allowed, otherwise the battery will be easily damaged. 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 post: What is the primary factor that lithium titanate battery has not become the mainstream?