Briefly describe the use and maintenance of lithium battery in mobile phone

In the daily use of mobile phones, we will get more and more problems in one way or another, but the attention of mobile phone batteries is obviously not as good as our love for mobile phones. The small version of the love machine N85 has recently experienced automatic shutdown. It was only after finding a person to understand that it was originally the use of lithium batteries on mobile phones that was not scientifically caused by the aging and damage of mobile phone batteries. It seems that the daily attention to love machines and the attention to the younger brother of batteries should also be paid enough attention. It is. The following is a small compilation of search and some of the Nokia cell phone lithium battery common sense and maintenance methods, please smile.

1. Nickel-cadmium batteries(Ni-Cd)

The earliest laptops used nickel-cadmium batteries(Ni-Cd). Because the battery technology was not advanced enough at the time, nickel-cadmium batteries had many headaches. Such as: large size, heavy weight, small capacity, short life, memory effect, etc.(give me the impression that none of them are). These are undoubtedly the opposite of the light and fast performance that the notebook seeks. At present, nickel-cadmium batteries have been eliminated, and laptops have also broken with nickel-cadmium. It is not necessary to mention it again.

2. Nickel hydrogen battery(Ni-MH)

Nickel-metal hydride batteries are currently the most environmentally friendly batteries, and environmentally friendly countries strongly promote the use of nickel-metal hydride batteries because they are easy to recycle and reuse, and they also have the least damage to the environment. However, nickel-metal hydride batteries still have some disadvantages compared to lithium electricity. The charging time is long, the weight is heavy, the capacity is also smaller than that of lithium, and there is a memory effect. Its memory is not as big as a nickel-cadmium battery, but it still needs to discharge, and users must use up before charging. However, nickel-metal hydride batteries can be charged more than 700 times, and some high-quality products can be charged and discharged up to 1200 times, which is longer than lithium batteries and the price is also very popular.

3. Lithium batteries(Li), Li-ion batteries(Li-ion), Polymer lithium secondary lithium ion batteries(Li-polymer)

Lithium electricity has long been available. At that time, it was not very safe to use. It often Burns and bursts when charging. This may be because lithium is too active. Later, an improved Li-ion battery(Li-ion) was added to inhibit the activity of lithium. It is an alternative to lithium batteries. Its anode uses a carbon electrode that can absorb lithium ions. When discharged, lithium becomes lithium ions., Disengage from battery anode to reach lithium ion battery cathode. When charged, lithium atoms in the cathode Ionize into lithium ions and electrons, and lithium ions move toward the anode and electrons synthesize lithium atoms. During discharge, lithium atoms Ionize lithium ions and electrons from the anode surface of the graphite crystal and synthesize lithium atoms at the cathode. Therefore, lithium in the battery will always appear in the form of lithium ions, will not appear in the form of metallic lithium, of course, there will be no danger of combustion, explosion and so on. Lithium ions move between the anode and the cathode, and the electrode itself does not change. This is the essential difference between a lithium-ion battery and a lithium-ion battery. As a result, lithium power has truly achieved safety, efficiency, and convenience, and the old lithium power has also been eliminated. The way to distinguish them is also quite simple: it can be identified from the battery logo, the lithium battery is identified as Li, and the lithium ion battery is Li-ion(N85 or even most mobile phones are lithium batteries, the full name is lithium ion batteries). Polymer lithium secondary lithium ion battery(Li-polymer) means that at least one or more of these three major structures use polymer materials as the main battery system. In terms of shape, the polymer lithium secondary lithium ion battery has many advantages such as thinning, arbitrary area, and arbitrary shape, so it can be made into batteries of any shape and capacity in accordance with product demand. In terms of thickness, the thickness of the polymer lithium secondary battery is about 2 to 4mm, while the current minimum thickness of the lithium ion battery is 6mm, which can be reduced by at least 50 % of the thickness, and the minimum thickness that can be achieved is approximately 0.5 mm.

The following is about the maintenance problems of the lithium battery(lithium ion battery) of the mobile phone around us, and it is also to correct some of the mistakes used in other battery maintenance in the past.

1. First, a new battery was obtained. Many users followed the instructions of the merchant to charge the lithium battery for the first three times for 12 hours or more. There is also a lot of controversy on the Internet, but I found that in practice, this is not necessary for most lithium batteries. Why? The business says this is to fully activate the battery and completely awaken the new battery. It sounds like a good reason to be credible, but has anyone thought about it? If the cell phone battery has not been fully activated by the manufacturer on the appearance, such a product can be said to be a semi-finished product. It is not possible to require every user to master the technique of activating the battery, nor is it possible in reality. Therefore, the battery has been fully activated by the manufacturer before it is delivered. So is 12 hours of charging good for batteries? No! I give a negative answer here. The current N95 body and brand power have a complete power management circuit and charging management system. When the battery reaches saturation, the control circuit automatically switches to the short-circuit state. So the rest of the time is just a waste of time. When charging, you have noticed that when a full charge of the hand will "drop" a hint, then it will no longer be filled with electricity, inserted is also a white plug. How do you activate the battery? In fact, the manufacturer's activation of the battery is to charge and discharge the battery for a long time without overload protection. Therefore, it is unnecessary to charge the first three times for 12 hours.

2. Again, many users are very confused about the use of batteries. Should they wait until the battery is completely exhausted before charging? The answer to that question should be this way. It would be nice if you could do it, but only if you don't mind the trouble. Of course, what I'm talking about here is not excessive discharge. Excessive discharge has proved to be absolutely harmful to the battery. It will shorten the battery's service life(there is software that specifically uses vibration or screen brightness to make the phone discharge. This is not advisable in battery maintenance). So when the phone has two cells or one cell, it can be charged at the right time. Some businesses have repeatedly stated that their lithium-ion batteries have no memory effect(this is also the idea of a common friend of the machine), which is a very irresponsible practice. So it's better not to charge your battery when it has more power, because the memory effect does exist, even a little bit, and the impact is profound. It is recommended that a full discharge charge once a month should be sufficient.

3. Let's discuss the daily charging problem again. When using lithium electricity, we do not need to pay attention to what is sufficient. Tests in many places have shown that only if there is no profit, we should generally try not to use less than one or two cells to shut down the battery. Charge for 1 to 2 hours. The N85 is usually filled with direct charge in two hours. The Momax I mentioned earlier can be filled in about 50 minutes to an hour. Do not exceed 5 hours, otherwise harmful to the battery, more than 12 hours of charging will significantly reduce the service life of lithium, and power, standby time. Remember! Although both the N95 and the primary power have had electricity and leakage protection, some "brand" chargers and "brand" electricity are different.

3. Let's talk about whether it is necessary to say in the usual lithium electric instructions or mobile phone instructions that "you should use it once a month". High-end phones, such as the lithium-ion battery used in the N85, generally have management chips(state detection) and charging control(over power protection) chips. Among them, there are a series of registers in the management chip, which contain values such as capacity, temperature, ID, charging state, and number of discharges. These values will gradually change during use. In my personal opinion, the main role of the "full charge should be put once after one month of use" approach in the use instructions should be to correct the improper values in these registers so that the battery charge control and nominal capacity match the actual situation of the battery. So such work can not be omitted, after all, the original or brand batteries are expensive, we should pay attention to maintenance. But if your Qianduo isn't going to bother, it's for reference.

4. Finally, talk about how to make the cell phone's battery longer. Since you bought a mobile phone to use, the battery is one of the consumable, will inevitably continue to be used for the end of time. If you do not use it, just maintain it, for a year or two, and become the same as the old decoration, it really does not pay. As long as everyone pays attention to the daily use of batteries, normal use of batteries can be, there is no need to fear the end.

The page contains the contents of the machine translation.