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Why do mobile phones choose lithium batteries?
sourceCarol
publisherCarol
time2020/08/22
- Why do mobile phones choose lithium batteries?
Why do mobile phones choose lithium batteries?
At present, most smartphones use lithium-ion batteries. So what are the specific advantages of lithium batteries that will make all mobile phone brands and even iPhones use lithium batteries as the first choice for mobile phone battery life?
01. What is a lithium ion battery
Lithium batteries are divided into lithium batteries and lithium ion batteries. Today's mobile phones and laptops use lithium-ion batteries, which are commonly known as "lithium batteries" and are representative of modern high-performance batteries. The real lithium battery is extremely dangerous and is rarely used in daily digital electronic products.
Lithium-ion batteries are also called secondary batteries (rechargeable batteries). Rechargeable lithium-ion batteries are the most widely used in modern digital electronic products. The biggest difference between lithium-ion batteries and lithium batteries is that the latter uses metal lithium as the negative electrode, while lithium-ion batteries are The use of lithium-containing materials (graphite and petroleum coke) as electrodes has largely restrained the high activity of lithium and solved the safety problems of traditional lithium batteries.
02. Advantages of Li-ion battery
Since lithium-ion batteries are now the first choice for smartphones, they naturally have their advantages. Compared with traditional battery technology, lithium-ion batteries charge faster and last longer, and their higher power density can achieve longer battery life, and they are also lighter.
Compared with mobile phones, lithium-ion batteries are actually two of the most important: good safety performance and long cycle life.
Tips1. Good safety performance
No pollution. Lithium-ion batteries, unlike traditional lithium batteries, are highly active and prone to short-circuit explosion accidents. Lithium-ion batteries are designed with many protection mechanisms and are safer. No memory effect. The memory effect mentioned here means that some batteries will memorize the user's charge and discharge range and mode. After a long time, it will be difficult to change this mode, and can not do large-scale charge and discharge. Li-ion batteries will not have a memory effect. of. This is the reason why lithium battery mobile phones can be charged as needed.
Tips2. Long cycle life
The service life of lithium ion batteries is generally 2-3 years. Generally, it can reach more than 500 times, or even more than 1000 times, and it can reach more than 2000 times for lithium iron phosphate. For mobile phones, long cycle life means longer usage time. For some high-quality batteries such as iPhone lithium batteries, the battery can still maintain 80% of its capacity after 500 charging cycles.
The above is today’s popular science knowledge about lithium batteries. Lithium batteries for mobile phones are the best choice so far. However, with the development of graphene super batteries, I believe they will soon be put into the field of mobile phones. In just a few minutes, Xiao Jindian is also very much looking forward to this day. If you like me, just pay attention to the golden points and get more popular science knowledge. Welcome to leave a message in the comment area to express your opinions.