Most batteries used in modern electronic products are lithium-ion batteries. Among them, mobile phones commonly use lithium-ion polymer batteries. Lithium-ion polymer battery is a type of lithium-ion battery and its electrolyte is a solid polymer. Compared with ordinary liquid lithium-ion batteries and other types of batteries (nickel-metal hydride batteries, nickel-cadmium batteries, etc.), polymer lithium-ion batteries have a higher energy density (the amount of electricity that can be stored per unit mass) and better high temperature performance, recyclable, low memory effect and high security.
Some people say that fast charging mobile phones will reduce battery life, but this is not entirely true. Because whether fast charging is used or not, it will not have a significant impact on the speed of aging.lithium-ion batteries.
High temperatures are the main cause of aging of lithium-ion batteries. The high power of fast charging makes the battery heat up in a short time. Although non-fast charging has low power and low heat per unit time, it requires a longer power-on time. As a result, battery heat will also build up over time. Therefore, fast charging and non-fast charging are the difference between high fire and low fire. The difference in heat generated during the charging process is not enough to cause a difference in the rate of battery aging. The most critical thing is that the current voltage and current of mobile phone fast charging are far from reaching the limit that lithium-ion batteries can support. Therefore, the fast charging standards currently on the market will not have any impactt significant on the battery life of mobile phones. But it is worth mentioning that under the same power, the combination of high voltage and low current generates more heat than the combination of low voltage and high current.
Finally, judging from actual usage, battery health doesn't have much to do with fast charging. Many factors affect battery health. As long as you don't use an inferior charger, charging heat is one of the factors that has the least impact on battery health.
If you want to know if fast charging electric vehicles will damage the battery, you first need to know what type of battery your electric vehicle uses. New energy vehicles equipped with ternary lithium batteries have the greatest impact. However, thanks to the existence of the BMS, in a limited time (the warranty period of the batterye of each vehicle is different), direct damage caused by rapid battery charging can be reduced.
Usually, electric vehicles are equipped with lithium batteries or lead-acid batteries, among which lithium batteries also include lithium iron phosphate batteries and ternary lithium batteries. Different battery types also need to be analyzed differently.
Fast charging mainly aims to ensure that lithium ions quickly integrate from the positive electrode and negative electrode without causing lithium ion deposition. But when the current increases, the semi-permeable membrane on the graphite surface of the negative electrode ruptures to a certain extent, causing the electrode material to react with the electrolyte. In addition, the increase in temperature will be accompanied by some side reactions, such as the decomposition of the electrolyte anddeposition on the electrode, which will result in a reduction in the reversibility and capacity of the battery.
In fast charging mode, the safety of lithium iron phosphate batteries is relatively high due to their lower energy density in fast charging mode and less impact on the battery core. However, ternary lithium batteries are smaller and have a higher density. It is precisely because of their reactive chemical properties that they react easily with oxygen in the air. When the inflation temperature is too high, combustion may occur. Therefore, in fast charging mode, for threeThe lithium-ion battery cell has a great influence.
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