Charging Miscellaneous Talk is a popular science column opened by the charging head network, and we can chat with you about various charging-related topics encountered in daily use. Charging head network often receives various consultations from small partners in the background, involving evaluation and disassembly content, comparison and recommendation, knowledge and science, etc., of which one question is often asked, that is, "Is it safe to charge the mobile phone all night?" ”
This is a topic of continuous high popularity in consumer electronics, in Baidu search "mobile phone charging all night" keyword, can search for 4.3 million results, you can imagine how many users are discussing, some people even read some marketing anxiety articles, resulting in similar "parents WeChat group" what to eat will cause cancer panic.
All fear stems from the unknown, as long as you say it clearly, you don't have to be afraid, the following charging head network will analyze this problem for everyone in a simple and easy-to-understand way.
Is it safe to charge your phone all night?
In fact, this question is a pseudo-proposition, as long as the manufacturer can leave the factory, there is no need to worry about the use of safety, in fact, this problem should be called "mobile phone charging all night is good?" ”。 There are three parts involved here, the charger side, the data cable end, and the mobile phone side.
Charger side
In general, the charger produced by large brands in compliance with the production will not have a problem for a long time, and the charger will use a chip to monitor the working conditions internally, providing short circuit protection, overcurrent protection, overvoltage protection, over-temperature protection, etc.
As the device is gradually full of power, the charging current will also decrease, until the device reaches 100% full power, the device will control out of the charging state, long-term plugging will not infinitely charge the device more power. The charger does not have to worry too much about plugging in and out of the charger frequently, so as to avoid loose housing, foot strain, and frequent insertion and removal will be dangerous.
There may be unexpected environments in the southern coastal areas, such as returning to the southern sky, the moisture in the air is large, and even enter the inside of the charger, the plug, this weather should ensure that the charger surface, jack, nearby are dry, and then powered.
Some people are worried that high-power chargers will charge the phone, but this is actually a misunderstanding. The charger on the mobile phone is actually called "power adapter", the nominal power is the upper limit of the performance he can play, as for how much power the charging phone can reach, this is the phone to decide.
If you don't understand it, let's take a very simple example.
The charger is like a school canteen, providing a variety of recipes (5V, 9V, 20V and other voltages) for elementary school students, middle school students, high school students (TWS small current devices, mobile phones, notebooks). As for what to eat (what voltage to want) and how much to eat (how much power), students need to decide with the canteen aunt (the agreement chip shakes hands and charges quickly).
The upper limit of power is that this dish is brought out, filled with a bowl of how full at most, even if the bowl of the college student is used for the primary school student to eat, it will not eat him, and he controls how much he eats. But to use the bowl of primary school students to eat for college students, that is, to feed not enough.
Data cable end
"Data line" is just a common name, it not only transmits data, but also an important bridge carrying power transmission. At present, some data cable terminals on the market will have chips in them, and some chips will have overvoltage protection, overcurrent protection, and over-temperature protection functions.
Data cable insertion device, relying on the contact on the terminal and the device connection, after long-term use, the terminal and the jack will have mechanical deformation, causing loose, contact oxidation and other adverse contact phenomena. The smaller Lightning interface, the inside is easy to accumulate hair dust, fruit powder can use a flashlight to illuminate the bottom jack of the iPhone, it should be very dirty or even hairy, you can use non-metallic items to remove themselves. There is a horizontal tongue in the middle of the USB-C interface, which is relatively easy to have foreign body intrusion.
Contact oxidation causes an increase in contact resistance, and the temperature of the mobile phone tail plug and the data cable will increase abnormally when charging, and even cause the data cable to overheat and burn and melt. Some unqualified data line terminal heads, when manufactured, due to the process is not up to standard, resulting in large gaps after insertion, it is easy to loosen, and the power supply contacts may mistakenly touch adjacent contacts after loosening, causing short circuit failures or even burning.
In addition, the welding process of the cable and the terminal PCB inside the data line is equally critical, because the space is small, and if the process is not passed, it may cause a short circuit due to looseness after long-term use, causing heat and burning. For users who prefer to put it on the bed, the data cable can even wrap around your neck and cause danger.
The quality of the data cable market varies greatly, and it belongs to the more problematic end of the link, and it is best for users to purchase a certified cable. Compliant data lines
Mobile
Chargers and data cables may buy copycats, but the mobile phone is a relatively safe link. A few years ago, because of the safety problem of a mobile phone brand battery, the entire industry increased the research and development of charging safety, and the security of mainstream large brands of mobile phones has been very stable.
Nowadays, the charging power of mobile phones has entered the era of 100 watts, and the safety design of mobile phones for charging is more complex, and even more than ten monitoring points in the machine, and the charging IC will also control the voltage, current, power, temperature and other conditions of the mobile phone throughout the process. Some mobile phones will also control the status of the charging interface, for example, the interface moisture will remind the user through the UI and prohibit charging, in general, the security of the mobile phone does not need to worry.
The battery has a service life, and if the battery is charged overnight every day, the battery will be saturated for a long time, and the performance decay rate will be faster than the low saturation state (the difference is not very large). Some mobile phone manufacturers, such as Apple, will record the user's usage habits in the system, only charge 80% of the power when sleeping, and charge it to 100% when ready to get up, delaying the aging speed of the battery cell.
The mobile phone inside the use of soft pack batteries to provide power supply for the entire system, the battery cell is similar to the egg roll like the winding structure, some manufacturers will even use a special process to make the battery cell, and even through the piercing test does not fire. Today's mobile phone cells are very safe compared to ten years ago, but there will be a very small probability of events.
In addition, after many years of use of mobile phones, the battery cell will age, the capacity decline the battery life time will become unsurfactory, the internal resistance will also increase, the charge and discharge will rise higher than the temperature of the new machine, and even the battery cell will leak, the charging is hot, and how to charge is not satisfied. At this time, it is necessary to replace the battery cell to obtain a safe state of use, and extend the service life of the mobile phone, you need to choose a high-quality battery brand, or you can use the original factory to replace the battery service.
For the small partner who replaces the battery cell by himself, he must pay attention to the fact that the soft package battery cell is soft, any external force is applied, and the internal winding structure will deform and lead to hidden dangers, and when installing the battery, pay attention to not squeezing and bending. Avoid choosing used batteries, as deformation can also occur when removing the battery.
Charging head net summary
Unexpected situations cannot be predicted, but they can be avoided in advance. As far as possible, buy large brand fast charging accessories, cable skin, charger shell loose timely replacement, mobile phone battery charging abnormal heat also in time through the regular channels for battery replacement. If the user is not sleeping, the current charge of the mobile phone is more than 90%, in fact, you can unplug the data cable, but also slightly reduce the aging rate of the battery.
Mobile phone charging all night, for the regular production of chargers, data cables and other fast charging accessories, basically do not need to worry, how comfortable how to use it, the mobile phone will also have a variety of security protection measures. Well, the topic of this charging miscellaneous talk is here, and the follow-up everyone wants to talk about what topic can leave a message to tell the charging head network, we will see you in the next issue.