Simple analysis of 26650 lithium battery

26650 lithium battery is a model specification of cylindrical lithium battery. Used in power tools, lighting, wind energy storage, electric vehicles, toys, instrumentation, UPS backup power supplies, communication equipment, medical equipment and military lights. So why does the 26650 of the 26650 lithium battery represent the meaning? The meaning of the model is: 26650 type, which refers to a cylindrical battery with a diameter of 26mm and a length of 65mm. After professional experimentation 1, about the over-discharge performance: After the battery is standard charged, the initial state of the battery is measured, and when the battery state is normal, discharge to 0V at 0.5C. Observe the changes in the appearance of the battery. Result: no fire, no explosion 2. Regarding heat abuse performance: measure the initial state of the battery. After the battery is standard charged, it is placed in an oven, and the temperature rises to 130±2°C at a rate of (5±2°C)/min and keeps it warm. 30min. Observe the changes in the appearance of the battery. Result: no fire, no explosion 3, experiment on the drop of 26650 power lithium battery: detect the initial capacity of the battery, measure the initial state of the battery after standard charging, and place the experimental battery from a height (lowest point height) of 1m vertically, Fall freely on the concrete floor in the horizontal direction, requiring two falls. Results: No fire or explosion. The advantages of Ni-MH batteries and Ni-Cr batteries are as follows: 1. High energy density and low self-discharge rate. The capacity of 26650 batteries is 1.5 or 2 times that of nickel-hydrogen batteries of the same quality. , The internal resistance of the domestic 26650 lithium battery is less than 60 milliohms. To a certain extent, the self-consumption power of the lithium battery is reduced, and the service life of the battery is prolonged. 2. Stable charge and discharge performance. The 26650 lithium battery pack has no memory effect, high temperature resistance and no analysis when exposed to heat, high safety performance, and long cycle life. 3. Environmental protection and pollution-free. There will be no pollution to the environment during use. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.