What is the principle of lithium ion battery

Introduction Actually, I don't understand what the principle of lithium-ion batteries is. I have compiled some information from the Internet for you, hoping to help you: Lithium-ion batteries use carbon materials as the negative electrode and lithium-containing compo

What is the principle of lithium ion battery

Actually, I don't understand either. I have compiled some information for you from the Internet. I hope this can help you:

Lithium ion batteries use carbon materials as the negative electrode and lithium. -containing compounds as positive electrode. There is no metallic lithium, only lithium ions. This is a lithium-ion battery. Lithium-ion battery refers to the general term for batteries using lithium-ion intercalation compounds as positive electrode materials. The charging and discharging process of lithium-ion batteries is the process of intercalation and deintercalation of lithium ions. During the process of intercalation and deintercalation of lithium ions, it is also accompanied by the incorporation and deintercalation of electrons equivalent to lithium ions (it is customary to express the positive electrode as insertion or deintercalation, and the negative electrodeive by insertion or deintercalation). During the charging and discharging process, lithium ions are intercalated/deintercalated and inserted/deintercalated between the positive and negative electrodes, which is vividly called "rocking chair battery".

Lithium-ion batteries have high energy density and high average output voltage. Self-discharge is low, less than 10% per month. There is no memory effect. The wide operating temperature range is -20℃~60℃. It has excellent cycle performance, can charge and discharge quickly, has a charging efficiency of up to 100%, and has high output power. long duration. There is no environmental pollution and it is called green battery

Thank you, if you like it, I hope to adopt it! ! !

There is no need to remove it. Unlike previous laptops, which require removing the battery when branched, modern laptops automatically switch to AC power by default after being plugged in (when the battery is fully charged, it is activated). will (it converts to DC after fully charged), so it will not affect the use if not unplugged. This is my personal experience

Here is an article about laptop maintenance and usage. this helps you again

Battery is the power source of the laptop If a laptop does not have a battery, then it is at best a mobile PC with average performance. Battery is very important for the laptop. Laptops play an extremely important qualitative role, but the accessories that play a qualitative role are consumables. Proper maintenance can effectively extend its lifespan. Therefore, various media outlets have been full of articles on how tomaintain the batteries. The maintenance process is described in great detail. But to summarize, haha, all reviews are similar and the main content is almost the same. on the maintenance of lithium batteries? No, no, recently the author carried out a large amount of data collection and collection on some large battery maintenance websites and websites, and found that there were errors and questions in the methods Current lithium battery maintenance news from major media, so I boldly put me here. I will show some of my experiences for everyone to see, hoping to provide correct solutions to those who have misunderstandings about maintenance.

Myth 1: Laptop lithium battery maintenance should follow the basic principle of depletion and full recharge.

This is perhaps the maintenance principle that everyone has seen the most. Haha, actuallyt, this is the most fundamental erroneous view. After a simple analysis, this principle is probably a copy of the original nickel metal. Hydride battery maintenance method Come on, this principle seems to be to minimize the charge. The memory effect of small batteries has a good protective effect on the early notebook batteries (nickel metal hydride or nickel cadmium), but it can damage lithium batteries in today's consumer laptops. Lithium batteries do not have a memory effect. Large manufacturers will explain this to users during their promotion. In fact, this is not the case. The material of lithium batteries is an active substance. This material is very sensitive to conditions such as temperature and frequency of use. When the battery has been used for a certain period of time, aging phenomena occur. The most intuitive manifestation is that the duration of usewe are reduced. Why is this happening?

Natural wear and tear is one of the important reasons, but everyone knows that their own care is also an important reason for this phenomenon. Excessive charging and discharging will quickly reduce battery activity. maintains the battery during maintenance, discharging and charging are far from reaching the excessive standard (because there is a protection circuit inside the lithium battery, which fully protects against excessive charging and discharging ), but have users ever thought about this phenomenon around them? Sometimes the battery capacity is displayed in Windows. There is still 20% left, which can be used for 30 minutes, but suddenly the machine turns off automatically. When you are confused, seek help from an expert. because the battery has aged and the battery protection circuit can no longer properly monitor the true capacity of the batterybattery, why? Combined with what I just told you, you can guess how reliable such a protection circuit is? The phenomenon just mentioned is the most intuitive manifestation of over-discharge, so here we can completely break a conceptual error: in case of normal daily loss of the battery, the protection circuit will become more and more inaccurate at that time, if you persist depending on maintenance. full charge and discharge principle, I believe the life of this battery is almost over, so if there is no such intuitive performance, will the battery not be damaged? The author is not engaging here, but I hope everyone will seriously consider whether the cause of the automatic power off mentioned above is just a natural loss factor.

The author therefore proposes here a correct maintenance principle:

During useion, there is no need to deliberately require 100% charging. It is best to use maintenance methods such as automatic shutdown. . Start charging when it's about 20% charged and stop charging when it's about 98% charged (if you're in a hurry, I'm not opposed to a full charge, it won't damage the battery) . has a power calibration program, you can choose Calibrate once every 1-2 months to allow the protection circuit to work fully.

Myth 2: A newly purchased lithium battery needs to be fully charged three times to fully activate its activity

If you can accept what I said above, you will think probably this. All opinions are completely absurd. Activation? When lithium batteries leave the factory, they have a certain amount of power to prevent damage caused by loss nnatural, so that the activation work has been completely completed at the factory (the activation process must be completed without the presence of a protection circuit). Imagine that the lithium battery circuit itself has a protection circuit whose purpose is to prevent electric shock. If the battery is overcharged and discharged, then you charge the lithium battery with a protection circuit for over 10 hours Haha what a ridiculous thing when the charging light goes off the battery refused to charge. Even the outlet can't draw a trace of electricity, so the term activation is even more ridiculous. It is entirely based on the nickel-metal hydride battery, which is an irresponsible statement. In order to verify the author's statement, you can install software called BATTERY MON. When the charging light turns off, you can see in the battery status column that the battery status is en line but it is not charging. There is a more intuitive method. The battery heats up when charging. When you charge the battery for ten hours according to the manufacturer's instructions, touch it. In other words, if it actually takes more than 10 hours of charging to activate, and if it can actually be charged for another 10 hours, the battery will be fried even with slow charging.

So here the author proposes the second correct maintenance principle:

It is not necessary to charge the battery for more than 10 hours to activate the battery activity according to the manufacturer's declaration. It is best to just use it, but due to long-term storage, battery activity will be reduced appropriately. It is best to fully charge the battery before use.

Myth 3: It is best to remove the battery when not in use to avoid overcharging.

The origin of the error appears to be a chain reaction. It seems that this erroneous view no longer requires the author to explain it to everyone. This is a natural error that is a problem for a well. lithium battery designed. She won't exist. This is one of the reasons why there is a protection circuit. This is also the reason mentioned above. As long as the charging light goes out, it means there is no charging action, and the overcharging problem no longer exists, but for batteries that have not been used for a long time, it is better not to do this, because there is already a certain measurement error between the protection circuit and the battery core. At this point, you need to use the battery calibration program to calibrate and then use it again.

The author therefore highlights the third principle of correct maintenance here:

You can place the battery in the machine in complete safety, there is nowill not have an overload problem, but there is one thing to note. is that the lithium battery will age faster in an overheated environment. If the laptop you are using is not well designed and the battery is placed very close to the processor, hard drive, and other heat-generating devices, aging can be accelerated. This happens If you do not use it frequently, you should remove the battery (when there is a certain power, such as 40%) to avoid damage to the lithium battery caused by overheating.

Finally, I would like to offer you some usage suggestions:

1: It can be used and charged at any time, but the number of charges and discharges should be reduced. as much as possible, or the power plug should be plugged and unplugged frequently. Because the charge and discharge times designed for lithium batteries are fixed, only 300-500 times, moreyou use it, the less you use it. >

2: Avoiding extreme temperatures is the best way to maintain lithium batteries. Try to avoid using and storing batteries in extreme temperatures and store them in a cool place as much as possible.

3: Maintain a good attitude towards use and do not excessively or deliberately pursue perfect maintenance of consumables. Natural wear and tear is a completely normal thing, just like human birth, old age, illness and death.

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