What is the relationship between lithium iron battery power and voltage

When discharging, the voltage of the lithium battery will gradually decrease with the passage of electricity, and there is a considerable slope. This provides us with another approximate way to measure electricity. The method of taking the battery voltage is the same as measuring the height of the water in the water tank to roughly estimate the remaining water volume. But in fact, the battery voltage is more complicated than the calm water level measurement in the water tank. The greater the discharge current, the lower the voltage. In the absence of current, the voltage is the highest. As the cycle progresses, the discharge platform of lithium batteries tends to deteriorate. The discharge platform is lowered. So the capacity represented by the same voltage has changed accordingly. For the same lithium iron battery, with the same remaining capacity, the voltage value changes due to the magnitude of the discharge current. Different manufacturers and different capacity lithium batteries have slightly different discharge platforms. In the process of grouping lithium batteries, due to the slender difference of the constituent materials of the lithium batteries and the different level of the grouping process, the functional performance of the lithium batteries will be inconsistent during use and placement. This is the discrete phenomenon of lithium batteries. The quantitative index describing this kind of dispersion phenomenon is the degree of dispersion, which is obtained from the functional relationship of several parameters. The key factors that cause the numerical change of the dispersion are: resistance, voltage, capacity, temperature, etc. 1. The inconsistency of the internal resistance of the iron-lithium battery, especially the polarization internal resistance, causes the voltage of individual batteries to change drastically during the charging and discharging process, which leads to drastic changes in the entire battery pack; 2. The inconsistency of the voltage of the single ultra-thin battery will affect The peak shaving ability of lithium battery packs reduces the energy released by the overall battery pack; 3. Due to the exothermic and endothermic processes in ultra-thin battery operation, the battery temperature will continue to change, and when overheated, it will bring performance degradation and safety. Hidden dangers. Facts have proved that the fuse of electric vehicle operation and fire detection in recent years is caused by insufficient over-temperature protection to cause the battery to heat up and fire. The battery types include not only lithium manganate, but also lithium iron phosphate batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.