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Home> Articles>News>7 Advantages Of LiFePO4 Battery — 2.9V Liso2 Lithium Batteries

7 Advantages Of LiFePO4 Battery — 2.9V Liso2 Lithium Batteries

From:CTECHI GROUP Limited     Release time:2019-01-08

Overview:Safety Performance: The P-O bond in lithium iron phosphate crystal is stable and difficult to decompose. Even at high temperature or overcharge, it will not collapse and heat like lithium cobalt oxide or form strong oxidizing substances, so it has good safety. It has been reported that a small number of samples were found to be burning in the needle-punching or short-circuit experiments, but no explosion occurred.

1. Safety Performance

The P-O bond in lithium iron phosphate crystal is stable and difficult to decompose. Even at high temperature or overcharge, it will not collapse and heat like lithium cobalt oxide or form strong oxidizing substances, so it has good safety. It has been reported that a small number of samples were found to be burning in the needle-punching or short-circuit experiments, but no explosion occurred. In the over-charging experiments, the explosion was still found when the high voltage charge was used, which was several times larger than the discharge voltage itself. Nevertheless, its overcharge safety has been greatly improved compared with ordinary liquid electrolyte lithium cobalt oxide batteries.


2. Improvement of Life

Lithium iron phosphate battery refers to lithium ion battery using lithium iron phosphate as cathode material.

The cycle life of long-life 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, and the standard charging rate (5-hour rate) can reach 2000 times. The lead-acid batteries with the same quality are "new half year, old half year, maintenance half year", and the maximum time is 1-1.5 years. The theoretical life of lithium iron phosphate batteries under the same conditions will reach 7-8 years. Considering comprehensively, the ratio of performance to price is more than four times that of lead-acid battery in theory. High current discharge can charge and discharge 2C rapidly. Under the special charger, the battery can be filled within 40 minutes after 1.5C charging. The starting current can reach 2C, but the lead-acid battery has no such performance.


3. Good High Temperature Performance

The peak value of lithium iron phosphate can reach 350 500 while that of lithium manganate and lithium cobalt is only about 200 C. The operating temperature range is wide (- 20C - +75C), and the peak value of lithium iron phosphate with high temperature resistance can reach 350 ~500 C, while lithium manganate and lithium cobalt are only about 200 C.

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4. Large Capacity

It has a larger capacity than ordinary batteries (lead acid, etc.). The monomer capacity is 5AH-1000AH.


5. Memoryless effect

Rechargeable batteries often work under the condition of full capacity, and their capacity will rapidly fall below the rated capacity. This phenomenon is called memory effect. For example, nickel-hydrogen 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 2/3 of that of lead-acid battery and the weight is 1/3 of that of lead-acid battery.


7. Environmental protection

The battery is generally considered to contain no heavy metals and rare metals (nickel-hydrogen batteries need rare metals), non-toxic (SGS certification), pollution-free, in line with European RoHS regulations, for the absolute green battery certificate. Therefore, the reason why lithium batteries are favored by the industry is mainly environmental considerations. Therefore, the batteries are included in the "863" national high-tech development plan during the "Tenth Five-Year Plan" period, which has become a national key project to support and encourage development. 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.


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