In recent years, the market share of lithium batteries increased rapidly, the rapid development of lithium batteries, according to the data show that in 2020 lithium-ion battery market is expected to reach 450 billion yuan. So, with more and more people using lithium batteries, there will be some concerns and risks. At present, lithium-ion battery technology is more mature, the correct use of lithium batteries to charge and discharge lithium batteries, both to ensure the battery life, but also remove the security risks.
      For the lithium battery charging problem, we know that lithium battery charging need to use a matching charger, in the industrial market, due to the individual products are also individually packaged, not mutually universal, therefore, should be based on the choice of the lithium battery charger, In strict accordance with the requirements of charging. Regardless of the industrial or civilian market, the basic principle of how to charge lithium-ion batteries is consistent, therefore, the steps for charging lithium batteries, the standard is standard, under normal circumstances, the nominal voltage of lithium batteries is 3.7V, charging The voltage is 4.2V. Below we have 1000mAh battery capacity as an example to illustrate the correct method of charging lithium batteries.
      Lithium battery charging is divided into two stages:
      First, the constant current charging, that is, a certain current, and lithium battery voltage gradually increase with the charging process, in accordance with the above specifications generally 0.2C current charging (C is the battery nominal capacity and current control of a representation of 0.2C That is 200mA), when the battery voltage is close to full voltage 4.2V, change constant current charging for constant voltage charging. This process is about five hours.
      Second, the constant voltage charging, that is, the voltage must be, and the current deepens with the deepening of the cell gradually decreases, according to the specification, when the current is reduced to 0.01C or 10mA, that the termination of charging. After this process and constant current charging time, the total charging time should not exceed eight hours. Therefore, to determine whether the lithium battery has reached saturation, there are two criteria: First, the current is 0.01C, the second is the total duration of not more than eight hours, in other words, lithium battery charging process if eight hours later still can not reach 0.01C, then Regarded as unqualified products. At this point, we have a theoretical understanding of how to charge lithium batteries, lithium batteries in the user to recharge, just follow the instructions on the regular charger can be charged, because the regular lithium battery charger are based on the lithium battery Features Designed to charge mode, which includes constant current and constant voltage charging process, we simply according to the charger indicator to determine whether the battery is already full. In the case of abnormal charger, we can take 8 hours as the basis (provided that your charger is 0.1C).
      At present, the technology is more mature lithium battery manufacturers, high-quality lithium batteries will give the battery protection board, comes with over discharge protection, such as huge electronic Co., Ltd. of Dongguan City, a professional custom lithium battery, overcharge protection voltage and Over discharge protection voltage according to the actual requirements of the battery.