What type of battery does Vivo mobile phone use?

2. It can be transformed into a thin battery: with a capacity of 3.6V 400mAh, its thickness can be as thin as 0.5mm.

3. Batteries can be designed in different shapes.

4. The battery can be bent and deformed: The polymer battery can be bent up to approximately 90°.

5. Can be made into a single high-voltage battery: Liquid electrolyte batteries can only obtain high voltage by connecting multiple batteries in series, while polymer batteries can be made into multiple batteries in a single battery because they do not haveno liquid layers to achieve high voltages.

6. The capacity will be twice that of lithium-ion batteries of the same size.

What are the differences between polymer batteries and lithium batteries?

Polymer batteriesStrictly speaking, they are called “lithium polymer batteries”. "" batteries (Li-polymer, also known as lithium polymer battery): It is also a type of lithium-ion battery, but compared with liquid lithium (Li-ion) battery, it has a higher energy density, smaller size, ultra-thin and lightweight, as well as high security and many other obvious advantages is a new type of battery. In terms of shape, lithium polymer batteries are ultra-thin and can be made into batteries of any shape and capacity to meet the needs of various products. The minimum thickness that this typeof battery can reach can reach 0.5 mm. Its rated voltage is the same as Li-ion 3.7V, and there is no memory effect.

“Lithium battery” is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Lithium metal batteries were first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M. S. Whittingham proposed and began studying lithium-ion batteries. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal are subject to very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have now become mainstream.

The main differencesReferences between the two are:

1. Polymer batteries do not have battery leakage problems. There is no liquid electrolyte inside the battery. uses solid state glue. Lithium batteries exist in liquid form

2. Polymer batteries can be transformed into thin batteries: with a capacity of 3.6 V 400 mAh, their thickness can reach 0.5 mm. Lithium batteries cannot be very thin

3. Polymer batteries can be bent and deformed: Polymer batteries can bend up to about 900 degrees. Lithium batteries cannot be bent or overbent

4. Polymer batteries can be made into single high-voltage batteries: Liquid electrolyte batteries can only obtain high voltage by connecting multiple batteries in series and polymer batteries.

5. Since the polymer battery itself does not containof liquid, it can be transformed into a multilayer combination within a single cell to achieve high voltage.

6. The capacity of polymer batteries will be twice that of lithium-ion batteries of the same size.

What is the difference between lithium batteries and polymer batteries?

Mass-produced lithium-ion batteries include liquid lithium-ion (LiB) batteries and polymer batteries. Lithium-ion (LiP) batteries Two types. So in many cases, if the battery is marked Li-ion, it must be a lithium-ion battery. But it is not necessarily a liquid lithium ion battery, it can also be a polymer lithium ion battery.

Lithium ion battery is an improved product of lithium battery. Lithium batteries have been around for a long time, but lithium is a very active metal and is not very safe to use. It burns and explodeswind when charging. Later, improved ingredients may inhibit the activity of lithium-ion batteries. Lithium elements (such as cobalt, manganese, etc.) have been added to make lithium batteries truly safe, efficient and practical, and the old lithium batteries have been virtually eliminated. As for how to distinguish them, they can be identified by the battery logo. Lithium batteries are Li and lithium ion batteries are Li-ion. Nowadays, “lithium batteries” used in laptops and cell phones are actually lithium-ion batteries.

The basic structure of a modern battery consists of three elements: a positive electrode, a negative electrode, and an electrolyte. As a battery type, lithium-ion batteries also have all three of these elements. Typically, lithium-ion technology uses liquid or inorganic colloidal electrolytes.organic. A strong casing is therefore required to contain the flammable active ingredients, which increases the weight and cost of the battery and also limits the flexibility of size and shape. Generally speaking, the minimum thickness of liquid lithium-ion secondary batteries is 6mm, and it is difficult to reduce it further.

The so-called lithium-ion polymer battery uses polymer materials as the main battery system in at least one or more of the three main structures.

The new generation of lithium-ion polymer batteries has a high degree of polymerization, so the shape can be thinned (the thinnest is 0.5mm), any area and n No matter what shape, greatly the flexibility of battery shape design is improved, so that batteries of any shape and capacity can be manufactured to meet product needs. At the same time, energy unitedThe capacity of lithium-ion polymer batteries is 50% higher than that of current general lithium-ion batteries. Its capacity, charging and discharging characteristics, safety, operating temperature range, service life and environmental performance are all superior. that those of lithium-ion batteries increase in magnitude.

Liquid lithium-ion (LiB) batteries currently on the market can easily cause the safety valve to rupture and catch fire when overcharged. This is very dangerous, so a protective IC circuit must be installed to ensure this. the battery will not be overcharged. As for polymer lithium ion batteries, this type of battery has better charge and discharge resistance characteristics than liquid lithium ion batteries, so the requirements for external protection IC circuits can be relaxed appropriately. DAdditionally, in terms of charging, lithium-ion polymer batteries can be charged with constant current IC, which can reduce the waiting time compared to the CCCV (Constant Current-Constant Voltage) charging method used in lithium-ion secondary batteries.

The so-called "lithium-ion polymer battery" is actually one of several subseries of lithium-ion batteries. In fact, its main components: the positive electrode, the negative electrode and the electrolyte. As a principle of operation, it is the same as using liquid. The electrolyte of lithium-ion batteries is the same, but the separation and packaging materials are different. Therefore, in the final analysis, it is essentially a lithium-ion battery! :

Lithium-ion polymer battery is a new type of battery with higher energy density, miniaturization, thinness, light weight, high safety, long lifelong life and low cost.

Nokia: uses Ni-MH (nickel metal hydride) batteries, LiB (liquid lithium-ion) batteries, but does not use LiP (lithium-ion polymer) batteries.

Lithium-ion polymer battery (polymer

lithium

ion

battery,

called LIP), compared to ordinary lithium-ion batteries (lithium

ion

battery,

called LIB) The main difference between these two batteries is that the electrolyte used comes in different forms. liquid and the latter is solid.

In addition, their packaging shells are different. The former mainly uses steel shells and aluminum shells, while the latter uses aluminum-plastic film flexible packaging, so lithium-ion polymer batteries are more often called "soft packaging". ." Battery".

Advantages of flexible packaging polymer batteries:

The unit energy of the batteries lithium-ion polymer is 50% higher than that of current general lithium-ion batteries. Its capacity, charge and discharge. features, safety Performance, operating temperature range, lifespan and environmental performance are all significantly improved compared to lithium-ion batteries.

A. High safety: Using aluminum-plastic film as the outer packaging, the safety features are much better than traditional metal-cased lithium-ion batteries

B. can be customized according to customer needs Customized batteries of various specifications and arbitrary shapes

C. High energy density, the unit energy is 50% higher than the current general lithium-ion battery

D. Long service life, reaching more than 500 times

E. No memory effect, green and environmentally friendly, no pollution to the environment

Applications of lithium polymer soft-pack batteries:

Small polymer battery: Bluetooth headset, MP3, MP4

Medium polymer battery: mobile phone battery , GPS, digital camera/DV

Large polymer battery: mobile DVD, NOTEBOOK, emergency power supply

Others

Others: model aircraft, electric bicycles, electric tools

The main lithium battery manufacturers in Shenzhen are:

Lithium batteries: BYD, BAK, Bangkai

Lithium polymer battery : ATL (Dongguan), Beiteli