What are the voltages of lithium-ion batteries

The voltage of a lithium ion battery is an important performance parameter of the battery. The voltage value of a rechargeable battery is expressed in volts (V), also known as a potential difference or a potential difference. It is a measure of the energy difference between the positive and negative electrodes of the battery due to the different potentials in the electrostatic field. The voltage of a lithium-ion battery is a variable process in the environment where the lithium-ion battery is located. The voltage of lithium ion batteries is divided into open circuit voltage, working voltage, termination voltage, and standard voltage. 1. Open circuit voltage: refers to the voltage of a non-working lithium-ion battery. At this time, there is no current flowing. When the battery is fully charged, the potential difference between the positive and negative poles of the battery is usually around 3.7V, and the high can reach 3.8V; 2 , Corresponding to the open circuit voltage is the working voltage, that is, the voltage of the lithium-ion battery in the working state. At this time, there is current flowing. Because the internal resistance when the current flows is to be overcome, the working voltage is always lower than when it is fully charged. 3. Termination voltage: that is, the battery should not continue to be discharged after being discharged to a certain voltage value. It is determined by the structure of the lithium-ion battery. Usually, due to the purpose of the protection board, the battery voltage is about 2.95V when the discharge is terminated. 4. Standard voltage: In principle, the standard voltage is also called the rated voltage, which refers to the standard value of the potential difference caused by the chemical reaction of the positive and negative materials of the battery. The rated voltage of the lithium ion battery is 3.7V. It can be seen that the standard voltage is the standard Working voltage. Disclaimer: Some pictures and contents of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Lithium-ion battery operating environment and introduction to the classification of lithium-ion batteries