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Battery aging mechanism Dec 22, 2017

Most of the batteries used on mobile phones are lithium-ion batteries, and what we mean by battery aging is the aging degradation of lithium-ion batteries in everyday use. Why aging phenomenon? First, give you a science popularization about the working principle of lithium batteries: lithium-ion electrolyte can walk in the yin and yang poles, resulting in equipment for the current. The so-called battery capacity, can be simply understood as the battery (charge and discharge) back and forth running the number of lithium-ion.

Fast charging can ruin the phone battery? This is the wrong way for you

The materials that make up the battery electrode often crack and disintegrate so that some metal ions (especially manganese ions) float freely and run to the opposite electrode, then trap lithium ions. When manganese ions (gray above) are stripped from the cell's cathode (blue area), it reacts with the electrolyte near the cell's anode (gold area) and captures lithium ions (green and yellow above). Over time, more and more lithium-ion can not be put into normal operation (locked), the battery capacity thus gradually decreased, resulting in decreased battery life.

Why aging?

1, overcharged over discharge

There are many reasons for battery aging, the first is natural aging. Even normal use, lithium-ion will also be from the anode, gradually aging, but aging slower; and in everyday use, over-charging, battery over-discharge will accelerate the aging of lithium batteries. Now the phone is usually rectified voltage regulator design, when the charge is full, the charger power supply, it will disconnect the charging circuit, the power cord directly to the phone for power supply. If you do not use the original charger, it is very likely not cut off the power in a timely manner, continue to charge the fully charged battery. Will speed up the lithium-ion off, damage the battery, causing the battery to age; and the battery is depleted, free-moving ions will be trapped, the same loss of battery capacity.

Fast charging can ruin the phone battery? This is the wrong way for you

2, the temperature is too high / too low

In addition to overcharge and over discharge, the battery temperature is too high, too low, will also affect the battery life. Frequent discharge of the battery will heat, the actual use of the battery temperature will cause high. So when we play big games or run other power-hungry programs, we need to be careful about cooling and to control program uptime. The same temperature is too low, lower lithium ion activity, battery performance and charging performance is also greatly reduced, if forced to charge, the same will affect the battery life. Therefore, in the cold environment, mobile phones, laptops, drones and other equipment, need to preheat the battery to reach a certain temperature before they can work properly.

Fast charging can ruin the phone battery? This is the wrong way for you

3, the current is too high

In addition, the charging current will also affect the battery life, the battery charging time, the current is too high, the battery will be particularly serious injury, and even cause short circuit, explosion, combustion and so on, the original manufacturers will have the original product Charging the protection circuit to control the battery charging current is too large, while in some cottage of the charger, universal charge, if not to join the protection mechanism, the consequences are very serious.