Are 18650 batteries more likely to explode?

A, Power battery propaganda may fool you.

When a lot of mobile power supply manufacturer in advertising products will often emphasize their batteries is high quality polymer batteries, safety performance is better than the other brands of batteries, and give a lot of shocking batteries "explode" photos, so concerned about what the product is safe and consumers how to choose?

Mobile power battery depth resolution - 18650 cells more easily?

Because there is no related professional knowledge, consumers in the choose and buy mobile power supply when the propaganda effect is more vulnerable to the manufacturer.Then the author here for you to analyze common mobile power batteries, and reveals the false propaganda behind the batteries, help you to choose suits own mobile power products.

Mobile power supply adopts at present lithium ion batteries. As the batteries.Lithium ion battery is a rechargeable battery, it mainly rely on lithium ions move between the positive and negative to work.Applied to the mobile power of lithium ion batteries are divided into two kinds: liquid lithium ion battery and polymer lithium ion batteries, an identity of merchants is the two batteries.

18650 easy explosion?Mobile power batteries parsing

Liquid lithium ion battery and lithium ion battery for what?If businessmen safety claims there's a big difference, why there's still a lot of application?The author then detail analysis for you.

Second, the liquid lithium ion battery (including 18650 battery)

Liquid lithium ion battery (LIB) in the anode materials for lithium compounds, anode materials for carbon (graphite), using liquid electrolyte as electrolyte, excluding the pure lithium metal batteries.

Mobile power battery depth resolution - 18650 cells more easily?

18650 battery and lithium ion batteries are soft package liquid lithium ion battery

Common in liquid lithium ion battery is cobalt acid lithium ion battery, namely the anode materials for LiCoO2, often take the form of 18650 cells, namely to 18 mm in diameter, length of 65 mm cylindrical battery, often for the steel shell, shell also have manufacturers use soft coated coating, make it more diverse shapes.

Mobile power battery depth resolution - 18650 cells more easily?

18650 battery internal structure

Cobalt acid lithium ion battery, for example, its energy density can reach about 140 mah/g, cycle life is more than 300 times (18650 battery technology is the most mature can provide more than 1000 cycles), current technology is relatively mature, simple production process, the lower the cost of the product, use very extensive.

Mobile power battery depth resolution - 18650 cells more easily?

18650 battery internal electrode and the diaphragm

The vast majority of the battery in the laptop is used18650 battery, the Tesla electric cars also use 18650 batteries, more than half of mobile power supply also choose 18650 batteries as batteries.In addition, most of the bluetooth headset, wireless devices such as digital products adopt soft package of lithium ion battery, the battery safety performance is guaranteed, but need to avoid second-hand inferior battery.

Mobile power battery depth resolution - 18650 cells more easily?

Built-in 18650 mobile power of the battery

By 18650 that many businesses mentioned battery should also pay attention to the unsafe problems.Setting of authentic battery anode has a pressure relief valve, can pop up when the pressure is high pressure in time, reduce the happening of the risk, has a high security.18650 battery accident is caused by using inferior used batteries, the product of very extensive application is also more common cause of the accident, and not a product of poor safety performance.

Third, polymer lithium ion battery

Polymer lithium ion battery (LIP, also known as lithium ion polymer battery, lithium polymer battery cathode material for lithium compounds, anode materials for carbon (graphite), using solid or gel polymer electrolyte, excluding the pure lithium metal batteries.

Common in polymer lithium ion battery is nickel cobalt manganese battery, namely the anode materials for LiNiCoMnO2, usually appears in the appearance of the flat.Nickel cobalt manganese batteries, for example, its energy density can reach 160 mAh/g, cycle life is more than 500 times, because of high production process requirement, the cost is higher, is also a main reason for restricting its development.

Mobile power battery depth resolution - 18650 cells more easily?

Due to the shape of a lithium polymer battery production more diverse, so limited in size and shape of better application in electronics.

Lithium polymer battery mainly used in the high prices of electronic products, including some of the design of a high degree of digital products, as well as some new rc products, also has used in electric cars and electric bicycle lithium polymer batteries.

Mobile power battery depth resolution - 18650 cells more easily?

Polymer lithium ion batteries are mostly using soft aluminum-plastic film packaging, in the high internal pressure will decrease the pressure of deformation, has good safety performance, but this does not mean that the lithium polymer batteries are absolutely safe, such as battery still exists in the use of rupture, fire and explosion danger, when users in the use, also should avoid the bad environment.

Four, batteries performance security

After the introduction of the above is easy to find a liquid lithium ion battery and polymer lithium ion battery anode material and anode materials is not essentially different, cells work is consistent, just different electrolytes traits.

Liquid lithium ion battery

Polymer lithium ion batteries

In terms of battery capacity, polymer battery without steel oligonucleotides, perform better, cycles were also better than the liquid lithium ion battery, will be the future developing direction of the battery.

Mobile power battery depth resolution - 18650 cells more easily?

Disguised as a polymer battery liquid lithium ion battery

Because of liquid lithium ion battery costs are low, at the same time there are many consumers simply think thin cells for polymer lithium-ion battery, a lot of mobile power supply manufacturers custom-made or purchase ready-made soft package of lithium ion battery, claimed 18650 battery explosion easily at the same time, their own "polymer battery" more secure, this is misleading.

In fact, the current technology more mature 18650 cells no less in terms of security, we need to do is to choose the brand products, avoid using quadratic bad batteries.As long as it is used in normal circumstances, both liquid lithium ion batteries and polymer lithium ion batteries, branded mobile power supply can provide us with safe life safeguard.

The page contains the contents of the machine translation.