In winter in the north, the mobile phone runs out of power, and people are afraid of freezing. Are mobile phones afraid of freezing? What is the reason?

Friends living in the north may find this phenomenon. Whenever the weather becomes extremely cold in winter, the power consumption of mobile phones will obviously accelerate. Especially when using a mobile phone outdoors, the power consumption will drop by 20% after a short brush.

What the hell is going on here? Is the mobile phone frozen?

In fact, not only people are afraid of the cold, but also mobile phones.

In fact, the mobile phone is very delicate, not only not resistant to falling, but also can only work normally in the environment of -20 ~ 50 degrees Celsius. This is the extreme temperature. Generally, when the temperature reaches-10 degrees or 40 degrees above zero, it is difficult for the mobile phone to work normally. Generally, when the temperature is lower than 0℃, the performance of mobile phone battery will decrease. When the fuselage temperature is higher than 40 degrees Celsius, it is difficult for the mobile phone to dissipate heat, and there will be performance degradation such as jamming and slow operation.

Nowadays, mobile phones on the market generally use lithium-ion batteries. Lithium-ion battery was invented in 1990s. The working principle of lithium-ion battery is to store and release electric energy by the chemical reaction between anode material, cathode material and electrolyte.

However, in low temperature environment, especially when the temperature is lower than 0℃, the reaction speed of chemicals in lithium battery will slow down, which will lead to the decline of battery charge and discharge performance and make the battery not durable. It gives people the feeling that the mobile phone is about to freeze to death. In fact, charging treasures that also use lithium-ion batteries will also run out of power in winter.

Mobile phones consume too much power in winter, which is actually the reason why the activity of lithium-ion batteries decreases and the power of mobile phones decreases in low temperature environment. The image point is that it is cold, the molecules in the battery are not active enough to provide rated power, and the total power of the battery drops, which feels as if the power consumption of the mobile phone has accelerated. In addition, when the temperature is too low, there will be a phenomenon that electricity cannot be charged.

The lower the temperature, the faster the power failure. Outside in the cold winter in the north, the temperature is basically below 0℃, and many times you will find that the power is cut off by just making a phone call 10%.

It is a common problem that mobile phones consume too much power at low temperature, which is technically difficult to avoid, but it can be solved when the temperature of mobile phones returns to normal temperature.

It is suggested that you put a thick protective case on your mobile phone in a low temperature environment, which can not only block the external low temperature, but also prevent the excessive loss of heat emitted by the mobile phone itself, so that the battery temperature will not be too low, which is equivalent to putting gloves on your hands, which can alleviate this phenomenon of running out of electricity in winter to some extent.

It is worth noting that if the mobile phone is used for a long time at low temperature, the life of the lithium battery will be shortened. Some users of Apple's mobile phone may encounter the phenomenon of automatic shutdown at low temperature, which is a low-temperature protection function set by mobile phone manufacturers to avoid damage to the battery at low temperature. Android phones generally have this setting, but the critical temperature of low temperature protection is relatively low, so it is rare to encounter the phenomenon of freezing shutdown.

In fact, working at high temperature for a long time is also harmful to lithium batteries. If the fuselage temperature is too high, the system will not only run slowly, but also charge slowly, and it may be shut down and restarted. In order to protect lithium-ion batteries, high-intensity playing with mobile phones and exposure to strong sunlight should be avoided when charging.

In addition, in the low temperature environment, not only the battery runs fast, but also the screen display will have problems. Nowadays, mobile phones generally use LCD (liquid crystal display) or organic light-emitting diode (OLED) screens, among which LCD is not as resistant to low temperature as OLED. When the temperature of the mobile phone is too low, especially the LCD screen, the brightness of the screen will decrease and the response speed will slow down. The most striking feature is the tailing on the screen display.

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