The seven advantages of lithium iron phosphate battery detailed

The seven advantages of lithium iron phosphate battery detailed

Abstract.
Lithium iron phosphate battery, refers to the lithium-ion battery with lithium iron phosphate as the cathode material. Lithium-ion battery cathode materials are mainly lithium cobaltate, lithium manganate, lithium nickelate, ternary materials, lithium iron phosphate, etc.

Working principle

Lithium iron phosphate battery is a lithium-ion battery with lithium iron phosphate as the cathode material. Lithium-ion battery cathode materials are mainly lithium cobaltate, lithium manganate, lithium nickelate, ternary materials, lithium iron phosphate, etc.. Among them, lithium cobaltate is currently the majority of lithium-ion battery cathode material used.

 

Advantages

1, safety performance improvement lithium iron phosphate crystals in the P-O bond solid, difficult to decompose, even at high temperatures or overcharge will not be as lithium cobaltate structure collapse heat or the formation of strong oxidizing substances, so it has a good safety. There is a report that a small number of samples were found to be burning in the pinprick or short-circuit test, but there was no case of explosion, while there was still an explosion in the overcharge test when charging with a high voltage that greatly exceeded its own discharge voltage by several times. Despite this, its overcharge safety compared to ordinary liquid electrolyte lithium cobalt-acid batteries, has been greatly improved.

2, the improvement of life lithium iron phosphate batteries are lithium-ion batteries with lithium iron phosphate as the cathode material. Long-life lead-acid battery cycle life of about 300 times, high also 500 times, and lithium iron phosphate power battery, cycle life of more than 2000 times, the standard charge (5-hour rate) use, can reach 2000 times. The same quality of lead-acid batteries are “new six months, old six months, maintenance and maintenance and six months”, more than 1 to 1.5 years, while lithium iron phosphate batteries used under the same conditions, the theoretical life will reach 7 to 8 years. Considered together, the performance-to-price ratio is theoretically more than four times that of lead-acid batteries. High-current discharge can be high current 2C rapid charge and discharge, in a special charger, 1.5C charging within 40 minutes can make the battery full, starting current up to 2C, while the lead-acid batteries do not have this performance.

3, high-temperature performance of lithium iron phosphate electric peak of 350 ℃ -500 ℃ and lithium manganate and lithium cobalt acid only in about 200 ℃. Wide operating temperature range (-20C- 75C), high-temperature resistance lithium iron phosphate peak electrical heating up to 350 ℃ -500 ℃ and lithium manganate and lithium cobalt acid only in about 200 ℃.

4, high-capacity ∩ rechargeable batteries in often in the full not put out under the conditions of work, the capacity will quickly fall below the rated capacity value, this phenomenon is called the memory effect. Like nickel-metal hydride, nickel-cadmium batteries have memory, while lithium iron phosphate batteries do not have this phenomenon, no matter what state the battery is in, can be used as it is charged, no need to first put out and then charged.

5, light weight?

The same capacity of lithium iron phosphate battery volume is the volume of lead-acid batteries 2 / 3, the weight of lead-acid batteries 1 / 3.

6, environmental protection

Lithium iron phosphate batteries are generally considered to be free of any heavy metals and rare metals (NiMH batteries require rare metals), non-toxic (SGS certification through), non-polluting, in line with European RoHS regulations, for the absolute green battery certificate. So lithium batteries are favored by the industry, mainly because of environmental considerations, so the battery is included in the “863” national high-tech development plan during the “Tenth Five-Year Plan”, becoming a key national support and encourage the development of the project.

7. With China’s accession to WTO, the export volume of Chinese electric bicycles will increase rapidly, and the electric bicycles entering Europe and America are required to be equipped with non-polluting batteries. However, some experts say that the environmental pollution caused by lead-acid batteries mainly occurs in the enterprises’ unregulated production process and recycling treatment.

Similarly, lithium batteries belong to the new energy industry is good, but it can not avoid the problem of heavy metal pollution. Metal material processing has lead, arsenic, cadmium, mercury, chromium, etc. are likely to be released into the dust and water.

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