Compared with the 18650 battery lithium polymer battery has advantages of what?

Source: 2020 - 04 - 20 hits: '18650 was the founder of the lithium ion battery for SONY to save costs and design of a standard lithium-ion battery. 18 to 10 mm in diameter, 65 for a length of 65 mm, 0 for cylindrical batteries. SONY company has been trying to make alkaline lithium ion battery, the battery has the certain industry standards. 5 batteries, no. Section 7 battery, basically but all over the world. But because the biggest advantage of lithium ion battery can be designed according to customer demand, can not have a unified standard, so until now the lithium ion battery industry basically only 18650 this a standard model, can make the large capacity 3 series 11. 1 V lithium-ion battery pack, if the different application environment also can make it 14. 8 V rechargeable lithium battery, battery or other surface is according to the requirements of customers design, compared with 18650 batteries, lithium polymer battery has the following advantages: 1. High energy density. Average about 18650 battery capacity is 2200 mah, the energy density of about 500 wh/L, and polymer battery production energy density can be close to 600 wh/L. 2. Good security. As we know, in extreme conditions, Such as overcharge, high temperature, etc. ) , lithium ion battery internal violent chemical reaction happens, produce a lot of gas. 18650 battery is metal shell, there is a certain strength. When the internal pressure reaches a certain degree, steel shell explosion will burst, causing serious safety accidents. This is why the test 18650 battery room generally must have a multilayer protection, and never use. Polymer battery does not exist the problem, even in extreme cases, because of the packaging film strength is low, as long as the pressure slightly gao will break, no explosion, the worst is burning. Therefore, polymer battery on safety is better than 18650 batteries. This is a 18650 piece of lithium batteries, totally different from polymer battery 3. Can design according to customer's requirements. It has said, so I will not repeat. 4. The price is relatively high. International price is about 1, 18650. 2 usd/PCS, according to the 2 Ah calculation is about 4 RMB/Ah. And polymer lithium battery, the price of the low-end shanzhai factory in 4 yuan/yes, in the end in 5 ~ 7 yuan/yes, high-end over 7 yuan/ah. As ATL, ubet and lishen, generally can be sold for 10 yuan/a ah, you are so young, people cannot accept. But polymer battery has its drawbacks. Mainly the high cost, because you can according to customer demand for design, the research and development costs will be calculated. And appearance is changeable, wide variety, cause in the process of manufacturing all kinds of fixture are standard parts, also increased the cost accordingly. Polymer battery itself poor generality, it is also because of its design flexibility, often in bad to 1 mm customers need to design, cost or cost, of course, I said above is not absolute. 18650 there are high-end applications, such as the recent popularity of tesla S type, it USES the panasonic 18650 battery packs. 18650, therefore, does not represent a low end, but the low end of the domestic some shanzhai factory. An old man said: 'everyone sitting here to discuss the safety of the next generation of lithium ion batteries. What is the next generation of lithium ion batteries? If the definition of the next generation of controversial, so what is this generation of lithium ion battery? ( Silence for a few seconds) I think this generation of lithium ion battery is 18650 representatives of the battery. Look at intelligent household cleaning robot battery pack. 18650 is designed to be team used batteries, so consistency is a high priority. Relative to character, 18650 battery is the best of the highest degree of automation, consistency. Just to a portable devices such as mobile phone, size design needs to be more flexible, so can't keep 18 & times; The size of 650, also do not need special, suitable for personal use. See you are not a 18650 lithium batteries, lithium polymer battery what difference has its own point of view, in short, now domestic 18650 lithium batteries, lithium polymer battery pack very mature, in addition to B products batteries or defective goods manufacturer, can guarantee the use of domestic battery pack.