Which cobaltate battery and polymer battery is better.3.2v 6000mah lifepo4 battery

　　Cobaltate batteries and polymer batteries are the two most widely used products in the field of power lithium batteries. The cobaltic acid battery refers to the material of lithium cobaltate, and the electrolyte is carbonate, and the positive pole material accounts for about 30%of the entire battery cost. However, in terms of energy density, the energy density of lithium cobaltate batteries is about 40%lower than the ternary battery. So in the field of electric vehicles, cobalt elements have been replaced by other elements. The electrode material of the polymer lithium -ion battery is composed of polymer as a positive electrode material, metal lithium negative electrode and electrolyte. It is produced with polyolefins (PP), polyvinyl chloride (PVC), polypropylene (PP), and polyamide (PA) as the main raw materials.

　　1. Security

　　The safety of cobaltate batteries and polymer batteries is better. The safety is mainly manifested in two aspects: one is that it will not burn or explode; the other is that it will not pierce the diaphragm and cause short circuits in the battery. The burning or explosion of cobaltate batteries occur during the charging process. The lithium metal negative electrode under high voltage is caused by the contact with oxygen in the air. Once the lithium metal negative electrode is in contact with the air, it will produce a "lithium branch The substance of crystal will pierce the diaphragm, cause short circuit, and cause burning or explosion. The electrolytic solution used in polymer batteries is not an organic solvent, but a solvent and additive that is harmless to the human body. It is also more assured than lithium cobaltate batteries in terms of safety. This is because there will be no dangerous gas during use, nor does it have a fire problem.

　　2. Energy density

　　The energy density of cobaltate batteries is low. This is due to the content of cobalt in the positive electrode material, and the lithium is mainly lithium in the negative electrode. At present, the energy density of ternary materials (such as NCM) reaches 260 WH/KG (160 wh/kg) or more, which is close to lithium cobaltate batteries. Therefore, the three yuan material (such as NCA) in the future as the development direction of the negative pole power battery. The polymer battery has been adopted by many power lithium battery companies due to its excellent circulation performance, high security and lower price advantages.

　　3. Charging time

　　The charging time of polymer batteries is short compared to lithium cobaltate batteries, and basically it only takes about 2 hours to be full. However, because the cobaltic acid battery needs an electrolyte, a large amount of gas will be generated during the charging process, and these gas will also greatly affect the life of the battery. This situation does not exist in polymer batteries, and the volume of polymer batteries is much smaller than lithium cobaltate batteries.

　　4. Cycle life

　　The cycle life of cobaltate batteries is worse than that of polymer batteries, especially when large magnification is charged and discharged, the circulation life is attenuation faster. The cobaltate battery has now developed to 4C charging cycle 800 times, while the lithium -ion battery of polymers usually recycles only about 300 times under 2C charging. This is mainly due to the lack of power charging and discharge of lithium cobaltate batteries.

　　The difference between the lithium battery of the national standard electric vehicle and ordinary battery

　　1. Technology content

　　Of course, in some ways, lithium -ion batteries are much better than lead -acid batteries. Under the same power, the volume of lithium -ion batteries is 70 % of the lead -acid batteries, and the quality is the same. It is much better than lead -acid batteries. The number of charging and discharge of lithium -ion batteries is more than 600 times, and the life span is relatively long.

　　Because the capacity of lead -acid batteries is too small, its life span is far less than lithium batteries, and the charging time will become longer. At most one year, it will be scrapped.

　　2. Price

　　The value of lithium batteries is two or three times that of lead -acid batteries. A normal electric vehicle costs at least one hundred dollars, and a lithium battery is at least one thousand yuan. For the class, it is definitely a huge amount. Although lead -acid batteries are low in price, they consume a lot each year, and they often need to be replaced once a year. Under normal circumstances, a good quality lead -acid battery is about 600 yuan, that is, a electric vehicle lights requires 2,400 yuan to change a battery.

　　Third, the memory of the battery

　　When charging the electric vehicle for ordinary lead -acid batteries, some people are always worried that there will be a memory effect, and now that there is a lithium -ion battery, everyone can rest assured that because the lithium ion battery has no memory effect, it is in the usual charging. Don't be too cautious! Because of its own nature, its memory effect is small. Therefore, users do not need special methods and devices when using new lithium -ion batteries.

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