Precautions for storage and application of lithium batteries

Lithium battery storage: Lithium batteries should be stored after charging. It can be stored for more than half a year at 20°C, so lithium batteries are suitable for low-temperature storage. Some people think that rechargeable batteries should be stored in the refrigerator, which is a good idea. Application note: Lithium batteries must be insoluble, drilled, punctured, sawed, pressurized and heated, otherwise it may cause serious consequences. Lithium batteries without a rechargeable protection board must not be short-circuited or used for children's play. Do not touch flammable or chemical substances. Discarded lithium batteries should be disposed of properly. Lithium battery charging and discharging requirements; 1. Lithium battery charging: According to the structure and characteristics of the lithium battery, the maximum intermittent charging voltage is 4.2v, and it cannot be overcharged, otherwise the battery will be scrapped due to excessive lithium ions in the positive electrode. The charging and discharging requirements are relatively high, and a special constant current and constant voltage charger can be used for charging. In general, constant current charging is converted to constant voltage charging after charging to 4.2v/junction. When the constant voltage charging current drops to less than 100mA, intermittent charging is required. Charging current (mA)u003d0.1~1.5 times battery capacity (such as 1350mAh battery, its charging current can be controlled between 135~2025mA). The traditional charging current can be about 0.5 times the battery capacity, and the charging time is about 2 to 3 hours. 2. Discharge of lithium batteries: Due to the internal structure of lithium batteries, all lithium ions cannot move to the positive electrode during discharge, so it is necessary to keep lithium ions in a part of the negative electrode to ensure that lithium ions can be easily inserted into the channel in the future. Otherwise, the battery life will be shortened accordingly. In order to ensure that some lithium ions remain in the graphite layer after discharge, it is necessary to strictly limit the intermittent minimum voltage of discharge, that is, the lithium battery cannot be over-discharged. The discharge intermittent voltage is generally 3.0V/cell, and the minimum should not be less than 2.5V/cell. The battery discharge time is related to the battery capacity and discharge current. Battery discharge time (hours) u003d battery capacity/discharge current. Lithium battery discharge current (mA) should not exceed 3 times the battery capacity. (Such as 1000mAH battery, the discharge current should be strictly controlled within 3A) Otherwise, the battery will be damaged. Lithium battery packs on the market now have matching charge and discharge protection boards. Just control the external charge and discharge current. 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.