Characteristics of polymer lithium battery and charging analysis

1. Relatively, the problem of battery leakage is improved, but it has not been completely improved. 2. Can be made into a thin battery: With a capacity of 3.6V250mAh, its thickness can be as thin as 0.5mm. 3. The polymer lithium battery can be designed into a variety of shapes. 4. It can be made into a single high voltage: a liquid electrolyte battery can only obtain high voltage by connecting several batteries in series, while a polymer battery can be made into a multi-layer combination within a single battery to achieve high voltage because there is no liquid. 5. The discharge capacity is theoretically 10% higher than that of a lithium battery of the same size. The charging method of polymer lithium battery The charging and discharging of polymer lithium battery and liquid lithium battery are actually the same. There are two important methods: constant voltage charging and constant current charging, and the two can also be crossed. In constant current charging, the capacity of the battery is increased over time, and the internal resistance of the battery is also continuously increased, and the charging becomes slow. At this time, we should not think that the charging is complete, it will take a period of slow charging. While the general manufacturers of polymer lithium batteries first use constant current for charging when charging the battery, and then use constant voltage current for charging. The current, voltage, and cell phone power are all changing with time, which ensures that the cell phone’s battery can be fully charged quickly. At present, the charging method of polymer lithium battery generally adopts constant current and constant voltage charging: the battery is first charged with constant current CC, when the battery voltage rises to a certain value (4.2V), the voltage remains unchanged CV, and the current in the circuit drops to a very high value. Small, eventually tending to 0. Polymer lithium batteries cannot be overcharged. If overcharge occurs, the performance of the battery will be greatly affected. Metal lithium deposits on the negative electrode may cause the battery to explode or catch fire. At the same time, the solvent in the electrolyte decomposes, causing serious damage to the battery performance. . Disclaimer: The articles published on this website are all from the Internet. If there is any infringement, please contact to delete it. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.