Talk about the common problems of lithium batteries

Talk about the common problems of lithium batteries. Lithium batteries have always played an important role in our lives. Various electronic products have been inseparable from lithium batteries. Now with the development of smart cars, lithium batteries are becoming more and more important in transportation equipment. , The following are the common problems of lithium batteries mentioned by lithium battery manufacturers? 1. What is the battery capacity of lithium batteries? The battery capacity is divided into rated capacity and actual capacity. The number of batteries refers to the battery design and manufacturing regulations or guarantees that the battery should release the minimum amount of electricity under certain discharge conditions. Lithium batteries can be charged for 3 hours at room temperature, constant current (1C), and constant voltage (4.2v). The actual capacity of the battery refers to the actual discharge amount of the battery under certain discharge conditions, which is mainly affected by the discharge rate and temperature (therefore, strictly speaking, the battery capacity should specify the charging and discharging conditions). Commonly used capacity units are: mAh, Ahu003d1000mAh). 2. What is the internal resistance of the battery? It refers to the resistance of the battery when the current flows through the battery. There are two parts: ohmic resistance and polarization resistance. The large internal resistance of the battery will reduce the working voltage and discharge time of the battery. The internal resistance is mainly affected by factors such as battery materials, manufacturing processes, and battery structure. It is an important parameter to measure battery performance. Note: The internal resistance of the general state of charge is the standard. The internal resistance of the battery should be measured with a special internal resistance meter, rather than the ohm range of a multimeter. 3. What is open circuit voltage? It means that the battery is in a non-working state, that is, there is no current flowing in the circuit, and there is a positive and negative potential between the batteries. The open circuit voltage after full lithium ion is generally about 4.1-4.2v, and the open circuit voltage after discharge is generally about 3.0v. According to the open circuit voltage of the battery, the state of charge of the battery can be determined. 4. What is the working voltage? It is also called terminal voltage, which refers to the positive and negative potential of the current flowing out of the battery in the circuit when the battery is working. In the discharging state of the battery, when the current flows through the battery, do not overcome the resistance caused by the internal resistance of the battery, so the operating voltage is always lower than the operating voltage of the open-circuit battery, and the opposite is true when charging. The operating voltage of lithium ion discharge is approximately 3.6V. 5. What is the unloading platform? The discharge platform is a constant voltage charging voltage of 4.2v, the discharge time when the current is less than 0.01c, put it aside for 10 minutes, and discharge to 3.6v at any discharge current rate. The battery is an important indicator to measure the quality of the standard. Lithium batteries are so important. Knowing the above questions is helpful to the use of lithium batteries. There are other questions. You can continue to pay attention to this website. Anhui lithium battery manufacturer Qianyuan New Energy will continue to answer more lithium battery related problem. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to choose lithium batteries in general?