Cell phone lithium battery charge and discharge process of research

Source: 2020 - 04 - 10 that hits: mobile phone lithium battery charging and discharging process research abstract: with the continuous development of social economy, people's living standards continue to improve, the mobile phone become indispensable in People's Daily life one of electronic equipment. But with the development of smart phones and large screen mobile phone, people demand for mobile phone is no longer limited to the communication function, including entertainment, office, business, etc. Therefore, mobile power consumption has increased. Reasonable application of mobile phone charging process, it is ensure the quality of mobile phone, prolonging the service life of the cell phone. In this paper, the cell phone lithium battery charge and discharge process has carried on the research and analysis of existing problems, and puts forward some advice. How to reasonable charge Keywords: mobile phones; Lithium batteries; Charging system; Drainage system; Battery temperature overview, today, with the continuous development of science and technology, electronic products market is heating up. All kinds of electronic equipment has become necessary in People's Daily life. Mobile phone is one of them. Mobile phone officially from the United States since the 1970 s, its function from the original simple communication, entertainment and leisure development gradually to the present of video, audio, notes, etc. , has become the right assistant in people's lives. Cell as a cell phone, one of the most important parts in the use of mobile phone plays a vital role. Due to the growing mobile phone usage, power consumption also will increase in the use process. As a result, people puts forward higher and higher requirements of mobile phone batteries. From the initial nickel-chromium batteries to nimh batteries, now, lithium battery covered almost the whole of mobile phone battery market. In terms of performance, the performance of the battery is more and more stable, more and more storage capacity, at the same time, the battery is smaller than before, lighter weight, more and more meet the needs of modern people. With the increase of mobile phone use frequency, charging the mobile phone has become an indispensable part of people daily life. Only the right to charge and discharge, can better maintain the battery performance, prolong the service life of the cell phone. However, consumer often exist in the process of using mobile phones and charging many unreasonable, such as mobile phone battery only empty, or in the process of charging for charging is complete, such as the use of these unscientific methods will lead to damage of lithium battery, in the long run, will inevitably lead to affect the normal play of the mobile phone performance. Only through the in-depth study of mobile phone lithium battery charge and discharge process, to master the correct method of use, and better improve the performance of lithium-ion batteries. Ii. Lithium battery charge and discharge process and the battery life of lithium-ion batteries of the relationship between correct use has an important influence on its performance and life. The analysis process and the operating temperature of the battery charging process, discharge three factors affect battery life. 1. Charging system and the relationship between the battery life three charging system is adopted in experiment was carried out on the cell phone lithium battery charging, each of the charging system USES different voltage mode. Under different charging ways through the battery capacity prediction and analysis finally, clarify the relationship between charging ways and lithium battery life. ( 1) 4. 2 v constant pressure constant charge to 100 ma current charging system for lithium battery charging. In the charging mode, the maximum current of continuous measurement of the battery cycle, find the maximum current is changed a lot. At the same time, the maximum current decreases ( Figure 2. 1, and y coordinates for the current value) 。 Which can be concluded that the charging ways could lead to battery capacity attenuation quickly, is not conducive to the use of the battery. Figure 2. 1 charge per charge under the mode of maximum current ( 2) The charging system USES 5 a constant current to 4. 2 v voltage, then 4. 2 v voltage to current 100 ma. In the charging mode, multiple measuring maximum charging voltage, charging voltage rising, and gradually higher than nominal charge voltage ( Figure 2. 2 for the voltage value) 。