What are the mistakes that affect the life of lithium batteries?

Mobile power brings convenience to our lives, but some errors in daily use and storage of mobile power will end the life of its internal lithium core earlier. This paper takes stock of several kinds of error operations that harm the service life of lithium batteries, hoping to help everyone to maximize the safety hazards brought by lithium cores, and thus extend the service life.

Mobile power has become an indispensable digital device for most consumers in their daily lives. We can see it in the subway, on flights to and from work, on trains or long-distance buses to destinations. While we enjoy the convenience of mobile power, its safety performance is also what everyone needs to know. After all, its internal lithium core will end the life of mobile power in the wrong way.

Since most mobile power sources on the market are currently composed of three major components: lithium batteries(including 18650 or polymers), circuit boards, and shells, in the traditional impression of people, the safety of lithium batteries is discussed. Will naturally associate with the various "explosions." So today we're going to talk about how to do the right thing with the mobile power in daily use to avoid the various ways in which lithium batteries inside the mobile power supply die.

Since the lithium battery inside the mobile power supply is proportional to the weight, and some mobile power sources with a capacity of more than 200g have their own weight, plus the use of plastic(11230, -55.00, -0.49 %) housing design, It is easy to break the shell of the product when there is a fall. Especially the cheap, shoddy mobile power supply, made of very fragile recycled plastic.

At present, there are many electronic products on the market that are very good at protecting the design of lithium batteries. For example, Apple's iPad will automatically prohibit charging operations when internal sensors detect the use of ambient temperatures. To avoid damage to the battery due to charging in a low temperature environment.

Therefore, the same lithium battery, when we use mobile power supply daily, we should also avoid the situation of too low or too high ambient temperature, so as to avoid the sudden reduction of capacity or permanent damage of the core, and directly scrap the situation. appear.

It is believed that many people have heard about the explosion of lithium batteries. With the popularity of lithium batteries in recent years, more and more electronic products have almost used it instead of traditional batteries. When lithium batteries first appeared, due to technical reasons, their safety performance was very low, and fire explosions were very common. However, after continuous improvement of technology, lithium batteries now have high safety performance. However, puncture or fire can still cause smoke or explosion of lithium batteries.

So when we need to discard mobile power, do not throw it into the source of fire or throw it away with household waste. A certain degree of puncture, crush and fire will cause smoke or explosion, and cause serious damage to the environment. It is worth noting that the use of low-quality chargers also has a certain chance of causing the explosion of lithium cores. Compared to the discharge process, lithium batteries are the most dangerous to charge, which is why most cell phone explosions occur when charging. So we should buy reliable or original phone chargers to charge when we use them.

Due to the chemical properties of lithium batteries, even if they are not used, there will be a slow drop in voltage. This is often referred to as the self-discharge phenomenon of lithium batteries. In addition, the self-discharge phenomenon of the lithium core inside the mobile power supply is even more obvious, because at present, the core inside most mobile power supplies is directly welded to the circuit board, and consumers can not remove the core when they are not in use. Separate storage, The standby or dormant circuit on the circuit board is always in operation, and the battery will be exhausted over time.

Although the core protection circuit inside the mobile power supply will automatically cut off the circuit to reduce the self-loss of the power when the core power(voltage) is reduced to a certain value, the low voltage set by the protection circuit of the mobile power supply on the market is different. Therefore, we should try to avoid the long-term placement of mobile power sources(three to six months or more, depending on the loss of mobile electricity) when the power is indicated to be insufficient. At this time, the core will be over-released. Even direct lead to a sharp drop in core capacity. Therefore, after we buy mobile power, once every certain time to charge and discharge, is the best way to extend its life.

summary

In other words, many people think that the security of mobile power is almost always related to the internal lithium core. Only the correct daily operation can maximize the safety risks caused by the lithium core and allow it to have longer service life. Avoid early scrapping. In addition to the continuous improvement of lithium battery technology today, it has made it have relatively good safety performance. At the same time, there are now manufacturers that have begun to use more reliable lithium iron phosphate cores instead of traditional lithium cobalt and lithium manganate cores to achieve higher safety performance.

In short, when we use and store mobile power in our daily life, we can enjoy the convenience that mobile power brings to our daily life by avoiding the wrong operations such as low temperature, falling, burning, and long-term placement. Of course, the purchase of a quality assurance, after-sales service in place of mobile power is also a necessary prerequisite.

If the internal insulation design of a mobile power supply is not in place, and the cable welding point between the core and the circuit board is easy to loosen, it is easy to deweld when it falls, and the core protection circuit is designed to the main circuit board. On, Then, the contact between the conductor of the core and other parts of the circuit board is likely to short-circuit directly.

Some mobile power sources with relatively solid workmanship usually fix each wire of the core firmly through some fixed methods. The suitable wire length and good fixed treatment further enhance the internal insulation effect. However, for most consumers, the internal structure and insulation of mobile power sources is difficult to know, so when we use mobile power sources on a daily basis, the first thing to pay attention to is to avoid the loss of mobile power sources.

What do you mean, temperature difference? It is too high or too low working temperature, resulting in a sudden decrease in the capacity of lithium core inside the mobile power supply. The working temperature of most lithium batteries is -20 °C -60 °C, and the optimal working temperature is 0 °C -40 °C. Lithium batteries using different positive materials also have different working and optimal working temperatures.

The page contains the contents of the machine translation.