Non-lithium plating fast charging strategy for three electrode pouch battery
The fast charging cycle life of Li-ion battery can be prolonged by optimizing the fast charging current.In order to find a method that can accurately and quickly obtain the fast charging current of Li-ion battery,based on the single-layer three electrode pouch battery,the constant potential tests are conducted at 25℃,35℃and 45℃to obtain the fast charging current at the corresponding temperature.By combining the temperature rise data of large-capacity batteries,the fast charging current corresponding to the temperature and state of charge(SOC)of the large capacity battery can be obtained.The cycle performance test shows that compared with the simulated fast charging current,the fast charging current obtained from the constant potential test can improve cycle performance of the battery by 6.93 times under the same cycle voltage of 2.80-4.25 V and discharge rate of 0.50 C.
万方数据
维普
