What are the parameters of lithium batteries?

1. Lithium battery monomer Lithium battery monomer is composed of positive and negative electrodes, electrodes, electrolyte and diaphragm. It is the basic structural unit of battery modules and battery packs. As an electrochemical power source, batteries naturally have characteristic parameters such as voltage, internal resistance, capacity, energy, and power. 2. Voltage The voltage of a single cell depends on the type of the anode and cathode materials of the monomer. General lithium cobalt oxide, ternary anode and graphite anode can achieve a full charge voltage of about 4.2V, while lithium iron phosphate batteries can only reach 3.6V. The voltage here, to be precise, should be that the electric potential depends on the material properties, and the value of the electric potential is equal to the open circuit voltage of the battery after being left for a long time. The cell terminal voltage in the closed loop is the voltage value detected by an external instrument, and its value is equal to the battery potential minus the internal resistance of the battery. The internal resistance of the battery is not constant and will change due to the influence of many factors. 3. Capacity Lithium battery capacity, measurable capacity, is the maximum power that can be charged and discharged within the reasonable maximum and minimum voltage range of the battery. The capacity of the monomer is obviously affected by the degree of aging. Everyone knows that when the capacity decays to a limit value, when the lithium battery is eliminated, it can be seen that the two have an absolute correlation. Secondly, the capacity is also affected by the temperature. At low temperatures, the activity of the active material decreases and the number of ions that can be supplied decreases, and the capacity will inevitably decrease. 4. Power The power here, to be precise, should be the specific power, which is the charge and discharge power capacity of a single cell or the charge and discharge power capacity per unit mass or unit volume of the cell. Whether the lithium battery can be charged and discharged with high power is determined when it is designed. Once the cell is processed, its reasonable maximum charge and discharge current has been determined. In addition to adjusting the battery's heat dissipation conditions, which can change its maximum charge and discharge power in a small range, there is almost no room for further adjustment. 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: What are the requirements for lithium battery cathode materials?