Is the mobile power source good for lithium-ion batteries or polymer lithium-ion batteries?

Generally speaking, mobile power supplies use two types of batteries, one is a lithium ion battery, and the other is a lithium polymer battery.

1. Lithium-ion battery is characterized by light weight, easy to carry, and completes charging and discharging by transferring lithium ions. Generally, lithium metal oxide is used as an electrode. It can be charged, and many mobile phones and computer batteries are generally lithium-ion batteries. Keep away from heat sources, avoid direct sunlight, and properly charge, but do not fill them, which can greatly improve the durability of the battery.

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2. Lithium polymer battery is characterized by high energy density, ultra-thinning, and its own internal material is solid, or colloidal solid, in the case of battery damage, will not leak liquid. Moreover, it is highly moldable and can adapt to different design needs. Under the same conditions, lithium polymer battery performance is 10% higher than lithium ion battery, but the relative production cost is higher.

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Of course, green radish, each has its own love, everyone has their own preferences, will choose their favorite, but after reading this, you should know how to choose the right one, many people in the choice of charging treasure, generally may First look at the head, after all, the head is too big, because it is heavy, it is also inconvenient to carry out, especially for girls, can be practical, charge the phone a few times, it will be fine. Therefore, when choosing to purchase a charging treasure, you should choose the right one according to your specific needs. Consider the practicality, portability, effective capacity, shape and other factors, combine your own needs, find a good point, and choose yourself. Satisfied charging treasure to meet your specific needs!

It is important to remember that fish and bear's paws are difficult to achieve. When choosing, find a balance point. The most important aspect is the main consideration. Other aspects are secondary assistance, so you don't have to worry so much, and you won't regret it after purchase. There is no regret medicine to buy!

First of all, from the structural point of view, the full name of the lithium polymer battery should be a lithium ion polymer battery, so it seems that the lithium polymer battery is actually a kind of lithium ion battery. The biggest difference between the two is that the electrolyte used in the interior is different. The lithium ion battery uses a liquid electrolyte, while the polymer lithium ion battery is replaced by a solid polymer electrolyte. The polymer can be solid or It is semi-solid (gelatinous).

Secondly, in terms of appearance, most of the mobile power sources currently on the market use a cylindrical (18650) lithium ion battery or a block lithium polymer battery, therefore, when we select the mobile power supply, if the product packaging does not specifically indicate the type of battery used, then simply by the thickness of the product itself, a general understanding of the type of battery used inside.

It can be said that after years of development, the technology of lithium-ion batteries is relatively mature, and the mass production has made its manufacturing cost very low. Therefore, lithium-ion batteries are more advantageous in price than lithium polymer batteries. This is why it is used in most laptops and other devices.

Since lithium ions using a liquid electrolyte will increase their internal pressure in the case of overcharging (overcharging), in order to avoid explosion of the sealed metal casing, the 18650 battery is usually equipped with a safety at the top. Valve, when the internal pressure of the battery is too large, the top safety valve will automatically pop out to play the role of decompression. However, when the safety valve is ejected, the lithium ions leaking inside the battery may still be ignited due to contact with oxygen in the air.

Compared with lithium ion batteries using liquid electrolytes, lithium polymer batteries using solid polymer electrolytes are ultra-thin in shape, with a theoretical minimum thickness of 0.5 mm, and any shape and arbitrary area. . The battery styling flexibility is greatly improved, so that a new generation of lithium batteries of any shape and capacity can be better formed.

Therefore, for electronic products using such lithium ion batteries, there are very high requirements on their internal charge and discharge protection ICs. However, with the development of lithium-ion batteries for many years, both the design of the battery itself and the technical level of various protection ICs are very mature, as long as they can be used correctly in daily use and avoid the battery being pierced by hard objects. The phenomenon, 18650 batteries are still very safe, otherwise most notebooks on the market will not use this battery.

In a strict sense, a lithium polymer battery is the same as a lithium ion battery using a liquid electrolyte in the positive electrode, the negative electrode, and the electrolyte. The only difference is the difference between the separator and the packaging material. Therefore, fundamentally speaking, Lithium polymer batteries are also a type of lithium ion batteries.

Summary: In fact, whether it is a steel-shell lithium-ion battery or a soft-packed lithium-ion battery, the performance in safety performance is very good. After all, the current lithium-ion battery production technology is very mature, as long as it avoids high temperature and short circuit in daily use. The occurrence of overcharge, piercing, etc., can avoid the occurrence of accidents such as "explosions" and fires. For the lithium-ion battery and lithium polymer battery that we often say, both have their own advantages and disadvantages. If you prefer the cost-effectiveness of the product choose the 18650 battery, if you prefer the appearance and volume of the mobile power supply. Then, the slightly more expensive lithium polymer battery is the first choice.

A polymer battery is a type of lithium ion battery. Lithium-ion batteries for 3C are distinguished according to the materials of the outer packaging. There are three kinds of aluminum shells, steel shells and polymers. In terms of these three kinds of batteries, the batteries have their own advantages and disadvantages. The energy density of the polymer battery is slightly higher. Under normal circumstances, it will not explode, and it will burn at most, but the outer packaging material is an aluminum-plastic composite film, which is easy to cause appearance problems Damage, leakage, etc. However, due to the special packaging method of the polymer battery, it can be made very thin and wide, which is more suitable for the trend that the thickness of the product is becoming more and more strict in the 3C market such as mobile phones, however, when it comes to mobile power, the shape is removed, and the polymer is higher in terms of safety. In general, there are advantages and disadvantages. As far as performance is concerned, no matter who is good or who is bad.

The page contains the contents of the machine translation.