Choosing Ternary Lithium or Lithium Iron Phosphate for Lithium Battery
Hit Count：23 Date：2019-01-05
8 Advantages of Lithium Iron Phosphate
1. Strong safety performance
The P-O bond in lithium iron phosphate crystal is stable and difficult to decompose. Even if the battery is damaged internally or externally, the battery is not burning, explosive and safe.
2. Extra Long Service Life
Lithium iron phosphate battery refers to lithium ion battery using lithium iron phosphate as cathode material.
The cycle life of ordinary lead-acid batteries is about 300 times, and the maximum is 500 times. The cycle life of lithium iron phosphate power batteries is more than 2000 times. Ordinary lead-acid batteries are "new half year, old half year, maintenance half year", and the maximum time is 1-1.5 years, while lithium iron phosphate batteries are used under the same conditions, with a life of 7-8 years. Considering comprehensively, the performance-price ratio of lead-acid batteries is more than four times that of lead-acid batteries. High current 2C can charge and discharge rapidly. Under the special charger, the battery can be fully charged within 40 minutes after 1.5C charging. The starting current can reach 2C, but the lead-acid battery has no such performance. After 500 cycles, the discharge capacity is still more than 98%, and the cycle life is excellent.
3. Good high temperature performance
Lithium iron phosphate has a wide range of operating temperature (-20 (-+80 (?) and good performance at high temperature: the internal temperature is as high as 95 (?) at 65 (?) for external temperature, and the temperature at the end of battery discharge can reach 160 (?) for safe and intact structure; and the peak value of lithium iron phosphate can reach 350 (?) to 500 (?).
4. Large capacity, large rate
It has a larger capacity than ordinary batteries (lead acid, etc.). The monomer capacity is 5AH-1000AH.
High efficiency output: standard discharge is 2 ~ 5C, continuous high current discharge can reach 10C, instantaneous pulse discharge (10S) can reach 20C;
5. Memoryless effect
Rechargeable batteries often work under the condition of full capacity, and the capacity will be rapidly lower than the rated capacity. This phenomenon is called memory effect. For example, lead-acid batteries, nickel-hydrogen batteries and nickel-cadmium batteries have memory, but lithium iron phosphate batteries do not have this phenomenon. No matter what state the batteries are in, they can be used as they are charged without first putting them out and recharging them.
6. Light weight
The volume of lithium iron phosphate battery with the same capacity is 3/5 of that of lead-acid battery and the weight is 4/7 of that of lead-acid battery.
7, environmental protection
Lithium iron phosphate battery does not contain any heavy metals and rare metals, non-toxic (SGS certification passed), pollution-free, in line with European RoHS regulations, is an absolute green battery certificate. The reason why lithium iron phosphate batteries are favored by the industry is mainly environmental considerations, so the batteries have been included in the "863" national high-tech development plan during the "Tenth Five-Year Plan" period, and become a key national support and encourage development projects. With China's entry into WTO, the export volume of Chinese electric bicycles will increase rapidly, and the electric bicycles entering Europe and America have been required to equip with pollution-free batteries.
8. Good waterproof performance and strong resistance
Overdischarge to Zero Voltage Test
The lithium iron phosphate power battery with 3.2V 1100mAh has been tested from discharge to zero voltage. Test conditions: 1 100 mAh STL18650 battery was filled with 0.5C charge rate, and then discharged to 0 C battery voltage with 1.0C discharge rate. The batteries are divided into two groups: one group is stored for 7 days, the other group is stored for 30 days; after storage expires, the batteries are filled with 0.5C charge rate, and then discharged with 1.0C. Finally, the differences between the two zero-voltage storage periods are compared.
The test results show that after 7 days of zero voltage storage, the battery has no leakage, good performance and 100% capacity; after 30 days storage, the battery has no leakage, good performance and 98% capacity; after 30 days storage, the battery has three charge and discharge cycles, and the capacity restores to 100%.
This test shows that even if the battery is overdischarged (even up to 0V) and stored for a certain period of time, the battery will not leak or damage. This is a characteristic that other types of lithium-ion batteries do not possess.
Harmfulness of ternary lithium batteries:
Let me take a look at recent events:
1. This is a self-report of an electric car dealer.
2. According to the reports, the land ark pure electric vehicle suffered from charging spontaneous combustion accidents on July 11 and July 17 successively. It is said that there have been several fires!
So it can be said that in the use of products, new energy vehicles and low-speed vehicles bear the same risks, even because the use of technology is not yet mature lithium batteries will cause greater losses, quality is the only cornerstone of brand survival.
3. Data show that in the first half of this year alone, there were 8 new energy vehicle fire accidents in China, 6 of which occurred within May, and all of them were spontaneous.
At present, our country is vigorously advocating the development of new energy vehicles and entering the national catalogue. The national standard is only a threshold. The standard needs of enterprises themselves are far higher than the national standard. Therefore, enterprises should accumulate and upgrade more technology and not blindly pursue price. We must pay attention to the quality of products, because the eyes of the masses are bright.
4. There are many electric car fire incidents happening today. Four people were burned in Beijing, five in Shanghai, and I don't know. Everywhere, they are caused by three yuan.
5. In the past, the State Quality Supervision Bureau conducted spot checks on some Sanyuan Lithium Battery factories in Shandong Province, and five of them were unqualified.
6. So how important it is to choose a high-security lithium battery, because life is above everything else.
Battery operators choose lithium iron phosphate batteries as the most reliable!
Shenzhen Mingduan Global Technology Co., Ltd. specializes in producing 48V series, 60V series, 72V series lithium iron phosphate battery packs, now facing the national recruiters, agents; investment Hotline - 400-829-7355, early franchise companies vigorously support, product concessions, look forward to your franchise, we work together to win-win!
Next：Lithium iron phosphate is starting to turn around in the field of vehicle power