The correct charging method of polymer lithium ion battery

Lithium-ion battery charging method, lithium-ion battery charging and discharging requirements. Regarding how to charge lithium-ion batteries, we understand that lithium-ion batteries should be charged with a matching charger. As more and more people use lithium-ion batteries, there are also some problems and hidden dangers. At present, lithium-ion battery technology is relatively mature. Correct use of lithium-ion batteries and charging and discharging of lithium-ion batteries not only ensure the service life of the battery, but also prevent potential safety hazards. Lithium-ion battery charging. JPG Li-ion battery charging method Li-ion battery charging procedures and standards can be standardized. Generally, the nominal voltage of a lithium-ion battery is 3.7v, and the charging voltage is 4.2v. This article describes the correct method of charging Li-ion batteries. 1. The safe working voltage range of lithium-ion batteries is 2.8-4.2v. Lower or higher than this voltage range, lithium-ion becomes very unstable in the battery and may even cause accidents. A special charger is required to keep the battery within a safe range. These chargers automatically adjust the charging mode according to the current state of the battery. 2. Activate. Before charging, the lithium-ion battery charger will supply a small current to the battery, and at the same time detect the change in battery voltage, and gradually increase the current until the set value. This process can be thought of as activation or test charging. 3. Constant current and variable voltage charging. The charger charges the battery with a constant current. 4. Variable current and constant voltage charging. When the battery reaches the cut-off voltage of 4.2v, the battery can only be charged about 70% (not fully charged). At this time, the charger continues to charge the battery with a constant voltage and a gradually decreasing current until it is less than 0.1a, and the battery voltage continues to rise, the battery will stop charging. Correct charging method of polymer lithium ion battery When charging lithium polymer battery, it is best to use the original manufacturer's special charger, otherwise it will affect or damage the lithium polymer battery. Polymer lithium ion batteries are best charged slowly to prevent rapid charging. Repeated charging and discharging will affect the life of polymer lithium ion batteries. If the mobile phone is not used for more than 7 days, the lithium polymer battery should be fully used before. There is a self-discharge phenomenon in polymer lithium-ion batteries. The longer the charging time of the polymer lithium ion battery, the worse it is. Regarding ordinary chargers, when the polymer lithium ion battery is fully charged, the charging should be stopped immediately, otherwise the polymer lithium ion battery will be overheated or overheated and the battery performance will be affected. After charging the lithium polymer battery, try to prevent it from being left on the charger for more than 10 hours. If you do not use it for a long time, please separate the mobile phone from the lithium polymer battery. The correct method of charging lithium-ion batteries for electric vehicles should not be overcharged; overloading may result. When the battery is fully charged, the lithium-ion battery or charger will automatically stop charging. There is no trickle that lasts more than 10 hours when charging with a nickel coin charger. In other words, if your lithium-ion battery is charged, it will not work on the charger. Don't overcharge. Low-voltage overdischarge or self-discharge reaction will cause decomposition and destruction of lithium ion active materials, which may be irreducible. Any overcharging of the lithium-ion battery may cause serious damage to the performance of the battery, or even an explosion. Lithium-ion batteries must be protected from overcharging during charging. Since lithium-ion batteries are non-memory batteries, it is recommended to charge or recharge the battery pack regularly every day or after riding, which can greatly increase the service life of the battery pack. It is recommended not to ride a bicycle to the battery pack every time, and recharge after the battery pack cannot discharge current. It is not recommended to discharge more than 90% of the battery pack capacity. When electric vehicles are started, on steep roads, earth-rock roads or strong headwinds, it is recommended that customers use pedal power when riding to maximize the battery and motor life. Li-ion battery pack capacity is measured at a room temperature of 25c, so a slight drop in battery capacity and range in winter is considered normal. It is recommended to charge the battery pack in a place with high ambient temperature in winter to ensure that the battery pack is fully charged. 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: What are the requirements for chargers when charging lithium-ion batteries?