Analysis on the composition and charging method of mobile phone lithium battery

1. The composition of mobile phone lithium battery The mobile phone lithium battery is mainly composed of a plastic shell, a lithium core, a repair circuit board and a recyclable fuse. Some manufacturers are also equipped with components such as NTC, identification resistors, vibration motors or charging circuits. The functions of each part are as follows: (1) Lithium battery: supply charging power. (2) Maintain the circuit board: prevent the battery from overcharging, overcharging, and short circuit. (3) Recyclable fuse (PTC): The positive thermistor is used in high temperature maintenance and is a double maintenance after circuit board failure. (4) Restorer fuse (NTC): negative thermistor, which can sense the internal temperature of the battery and keep the battery in a low temperature state. (5) Identification of resistance: It is very important to identify primary and non-primary batteries that cannot be used. There are several levels of batteries, including Type A batteries and Type B batteries. Second, the correct charging and discharging method of mobile phone lithium battery The correct way to charge mobile phone lithium battery is to use lithium battery, so that there will be no recall and activation problems. Do not charge more than 12 hours for the first time, while nickel only needs 4 hours. The life of a lithium battery depends only on the number of recharges, which is about 1000 times. The standby time is related to operation. However, the mobile phone seller stated that it will take 12 hours to charge the first three times. How is this? How to charge: When using a lithium battery, it should be noted that the battery will enter the dormant state after being placed for a period of time. At present, the capacity is lower than normal, and the use time will be shortened accordingly. However, lithium batteries are easy to activate. Only 3 to 5 normal charge and discharge cycles can the battery be activated and restore its normal capacity. Due to the characteristics of lithium batteries, the recall effect is poor. As for the activation of lithium batteries, many people say that the charging time must exceed 12 hours, and it must be repeated 3 times to activate the battery. The claim that the first three charging takes more than 12 hours is obviously a continuation of nickel-cadmium batteries and nickel-hydrogen batteries. So it is misleading to say this at the beginning. The charging and discharging characteristics of lithium and nickel batteries are very different. I can tell you very clearly. I reviewed all serious official technical data and emphasized that excessive charging and excessive discharge of lithium batteries can cause great damage, especially liquids. lithium battery. Therefore, it is best to charge according to the standard time and method, especially not more than 12 hours. Generally speaking, the charging method analyzed in the mobile phone manual is the standard charging method suitable for mobile phones. In addition, lithium battery mobile phones or chargers will automatically stop charging after the battery is fully charged, while nickel battery chargers will not display the so-called trickle that continues to charge for more than 10 hours. In other words, if your lithium battery is fully charged, it will also be charged in vain on the charger. However, we cannot guarantee that the charge and discharge characteristics of the battery maintenance circuit will never change, and that its quality is safe. Therefore, your battery may linger on the edge of danger for a long time. This is another reason why we oppose long-term charges. In addition, if the charger is not taken out after charging some mobile phones for a period of time, the system will not only stop charging, but also start a charge-discharge cycle. Perhaps the manufacturers of this approach have their own intentions, but it is clearly not conducive to the life of the battery and mobile phone/charger. Charging for a long time takes a long time, usually at night. However, in my country's power grid, the voltage at night is relatively high, and the voltage in many places may be unstable. As mentioned earlier, lithium batteries are fragile. Compared with nickel, they are much less resistant to charge and discharge fluctuations, and nickel brings additional risks. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of several markets for lithium raw materials