Analyze the correct charging method and charging stage of lithium batteries

The correct way to charge lithium batteries: shallow charging and shallow charging are more beneficial for lithium batteries. Only when the product's power module is calibrated for lithium batteries, it is necessary to deep discharge and deep charge. Therefore, products powered by lithium batteries do not need to be constrained by the process. Everything is convenient and can be charged at any time without worrying about affecting the lifespan. Be wary of charging at excessively high temperatures. If the lithium battery is used in an environment above the specified operating temperature, that is, 35°C, the battery's power will continue to decrease, that is, the battery's power supply time will not be as long as usual. If the device is charged at such a temperature, the damage to the lithium battery will be even greater. Regarding the issue of lithium battery charging, we know that the lithium battery needs to be charged with a matching charger. We should choose the corresponding charger according to the lithium battery pack used, and charge it in strict accordance with the requirements. There is no special way to activate the lithium battery, the lithium battery will be naturally activated during the normal use of the machine. The safe working voltage range of lithium battery is 2.8~4.2V, lower or higher than this voltage range, the lithium ions in the battery become very unstable, and even cause accidents. In order to ensure that the battery is in a safe range, a special charger is required. The charger charges the lithium battery with a constant current. As the battery voltage increases, the charger increases the charging voltage at the same time to speed up the charging speed. The most critical storage conditions for lithium batteries are temperature and humidity. Generally, room temperature has little effect on the state of lithium batteries, but there should be no direct sunlight. High temperature can easily cause the model lithium batteries to swell or explode, so lithium batteries are generally stored in In an iron box or plastic box that is protected from light and air, if the discharge performance of a single lithium battery is very good, you should also buy a lithium battery explosion-proof protective bag. This reinforced bag has a reinforcing net inside to prevent the high-energy lithium battery from leaking and exploding. When it is harmful to other items. Lithium battery charging is divided into two stages: 1. Constant current charging, that is, the current is constant, and the voltage of the lithium battery gradually increases with the charging process. According to the above specifications, it is generally charged with a current of 0.2C. When the battery voltage is close to the full voltage 4.2 At V, change the constant current charging to constant voltage charging. This process takes about five hours. 2. Constant voltage charging, that is, the voltage is constant, and the current gradually decreases as the saturation of the cell deepens. According to the specification, when the current decreases to 0.01C or 10mA, the charging is considered to be terminated. After this process and the constant current charging time are added together, the total charging time should not exceed eight hours. Therefore, there are two criteria for judging whether the lithium battery has reached saturation: one is that the current is 0.01C, and the other is that the total time does not exceed eight hours. In other words, if the lithium battery charging process still cannot reach 0.01C after eight hours, It is regarded as a non-conforming product. At this point, we have a theoretical understanding of how to charge the lithium battery. When charging the lithium battery, the user only needs to charge the lithium battery according to the method in the formal charger manual, because the formal lithium battery charger is based on the lithium battery. The characteristics of the battery design the charging mode, which includes the process of constant current and constant voltage charging, we only need to judge whether the battery is overflowing according to the indicator light of the charger. If the charger is abnormal, we can use 8 hours as the basis. 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: Common bad decomposition of battery protection board