Research for Combined Sinusoidal Waveform Charging Parameters of Lithium Iron Phosphate Battery

• Main Authors: CAO, ZHONG-TING, 曹仲廷
• Other Authors: HUANG, KUOHSIU DAVID
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/ce8x49

碩士 === 國立臺北科技大學 === 車輛工程系 === 107 === The combined sine wave is different from the traditional constant current electric constant voltage charging method. It only needs to set the current and voltage, and also needs to set the parameters of its waveform. Therefore, I have done a study on the charging parameters of the combined sine wave. The types are frequency, lower amplitude, and upper amplitude. The first is the frequency. It is found by measurement that the lowest internal resistance of each brand new battery has the same frequency, but the frequency of the battery will change after use. At this time, charging with the frequency corresponding to the lowest internal resistance will have better activation effect. The lower amplitude part, the excessive lower amplitude will cause the peeling of the pole plate, and the reduction of the amplitude will not only increase the charging efficiency but also the upper amplitude. The upper amplitude is related to the charging efficiency and temperature. Change the upper amplitude to adjust the optimal charging efficiency and temperature balance. The above research is to solve the problem that the battery is damaged when the battery is almost full when the battery is charged with a large current conventional charging method, and the battery is charged by a better charging method.