I believe that mobile phones have become the favorite of most people now, and if everyone's mobile phone battery drops below 20%, they will probably have some bad emotions, such as fidgeting and the like, after all, it seems like they are not taking them when they go out. Just like wallets, mobile phones are easy to run out of power and become an object of anxiety for everyone nowadays. Mobile phone manufacturers naturally understand this, so they respond to the needs of the majority of users. After all, users are the fundamental. Who buys mobile phones without users? So the fast charging function came into being. It can even be said that fast charging is the greatest invention in recent years. Many people can never go back after using fast charging. This technology is available, but another problem arises at this time.
What is in front of people today may not be how fast the charging speed of mobile phones is. After all, Xiaomi's 100W fast charge has been developed, and 40W fast charge can be seen everywhere. Wireless charging has achieved 20W, and now it is even a thousand yuan. All phones have started to use fast charging technology. Under normal circumstances, the use of these once-high-end technologies in the Qianyuan machine can only mean that its cost has been reduced, so these technologies can be popularized. When the number of users increases, there will be another problem. The chargers that everyone has used are basically 5V1A specifications, not to mention Apple, 1A chargers have been used for several generations, but in the era of fast charging, charging with various parameters Now that the device is available, consumers will inevitably have questions at this time. Will the parameters become larger and will damage the battery? After all, today's mobile phone batteries cannot be replaced, unlike in the past. Here we will introduce several major directions of today's fast charging technology.Also read：catl lifepo4 cells
Nowadays, to increase the charging speed, in fact, there are mainly the following two methods, which are also two major directions today:
- Increasing the voltage and increasing the voltage have higher requirements on the quality of the charger. During the charging process, the charger will generate a lot of heat, so if the charger does not meet the standard, it may be dangerous.
- Increasing the current means reducing the voltage to increase the current, but high current also has disadvantages. For example, it will accelerate the aging of the battery and bring certain safety hazards, and the high current will also cause chemical substances inside the lithium battery. The irreversible loss is also beneficial, that is, the heat generation is low, it depends on how the manufacturer balances the relationship between them.
But fast charging technology, all need to meet three conditions, that is, three indispensable links: charger, battery, chargeIC. The fast charging technology that increases the current usually requires additional customization of the charging cable, because the current is large, and there is no certain standard specification that will cause harm to the human body.Also read:3.2v LiFePO4 Cells
At present, the fast charging technology of mobile phones is mainly divided into the following three categories:
- VOOC technology, the core of which is low voltage and high current.
- Qualcomm QuickCharge technology, the core of which is high voltage and low current.
- MediaTek PumpExpressPlus technology, which allows the charger to determine the voltage according to the current, which can be dynamically adjusted.
So in the final analysis, will this mobile phone fast charging technology affect the battery life?
In fact, you can think about it, combining the two directions mentioned above, increasing the charging voltage or current to increase the charging speed. In fact, when the charging current increases, the material on the surface of the negative electrode of the battery will rupture. This material is called a semi-permeable membrane. It will rupture slightly, but the result is that the internal material will react, so it will cause irreversible loss. However, increasing the voltage will also increase the heat, and heat is also the biggest killer of lithium batteries, which will reduce the activity and capacity of the battery.Also read:Lithium Iron Phosphate (lifepo4) Battery
However, you don't need to be pessimistic about this, or you don't use fast charging because of this, or even use slow charging for your fast-charging mobile phone. Let's not talk about the life of the battery itself, in fact, many times you use slow charging, you will also The damage caused by the battery, after all, does not meet the standard of mobile phone charging, the IC chip naturally has to make different adjustments, so the battery is originally a consumable, and the lifespan of the smart phones on the market today is very long, and the lifespan is generally at least 500 charging cycles, as long as we can pay attention to developing the correct charging habits, it is completely possible to use it for about two years. After all, lithium batteries have existed for many years, and the technical accumulation is in place, and it will not break down quickly.