Mar 29, 2019 Pageview:531
As the popularization of new energy vehicles, the safety of power battery has always been a hot topic. Especially recent new energy vehicles on fire incident make people deeply be worried for the safety of the power battery. New energy bus needs large capacity manned, so its security is related to many people's life and property safety. From the current situation, ternary lithium battery and lithium iron phosphate battery is controversial. But experts said that in the field of bus application, lithium iron phosphate battery is more suitable for the development of new energy bus requirements.
lithium iron phosphate battery has many advantages, embodied in:
(1) A longer service life. Data show that long life of the lead-acid battery cycle life in around 300, the highest is only 500 times, but the lithium iron phosphate battery cycle life can reach more than 2000 times, use fixed number of year is as high as 7-8 years, comprehensive high cost performance.
(2) Security is higher. And cobalt acid lithium manganese acid lithium and other cells in the event of a hit so hard it's easy to explosion, a serious threat to people's life safety, through strict testing and lithium iron phosphate battery, even in the worst traffic accident impact also won't appear the explosion happens, therefore the lithium iron phosphate battery is more suitable for new energy bus safety requirements.
(3) Can be completed quickly charging process. Under the special charger, charging 1.5 C charging process, can complete within 40 minutes the starting current can be up to 2 C.
(4) High temperature resistant performance is high, under the environment of high temperature is not easy to appear safe hidden trouble. Other types of batteries only at about 200 ℃ temperature can work normally, and lithium iron phosphate batteries can be as high as 300 ℃ to 500 ℃ high temperature function.
(5) Green pollution-free. New energy vehicles is designed to solve the problem of environmental pollution, and waste lithium iron phosphate battery less pollution to the environment, promotion for new energy vehicles plays an important role.
lithium iron phosphate batteries after years of development, the technology is relatively mature, although it has many advantages, but everything is not perfect, the lithium iron phosphate batteries are still exist some shortcomings, embodied in the common oxidation reaction in the process of sintering, tap density and compaction density is low, the cost of materials and manufacturing, such as high cost and poor product consistency.
Now many countries are to strengthen the research of lithium iron phosphate batteries, believe that with the deepening of the technology, constantly optimize the lithium iron phosphate battery, make it more adaptable to the development of new energy vehicles.
The page contains the contents of the machine translation.
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